{"product":{"catalog_id":"2d35d3b3-b9ad-4073-be94-ff7a857d7aa8","is_eligible_search":true,"is_eligible_checkout":false,"item_id":"47952365355288","gtin":"761139033344","mpn":"DELTACHILDREN-761139033344-NEWOVERSTOCK","title":"Delta Children Twinkle Stars Dual-Sided 6\" Recycled Fiber Core Crib & Toddler Mattress, Waterproof, Greenguard Gold certified","description":"The Delta Children Twinkle Stars Dual-Sided 6\" Fiber Core Crib and Toddler Mattress is a firm, dual-sided mattress for standard cribs and toddler beds with a high-density thermo-bonded polyester fiber core made from recycled materials (manufacturer notes ~300 recycled water bottles); dimensions are approximately 27.5\" W × 52\" L × <6\" H and the product weight is about 8.5 lb. The mattress features an innovative knit cover with a 3D airflow structure and waterproof backing on both sides for ventilation and easy cleaning, square corners for a secure fit, is GREENGUARD Gold certified with compliance to flammability, lead, phthalate and CPSIA testing (no toxic fire retardants), and carries a limited 7-year warranty; made in Wisconsin.","url":"https://kidsy.co/products/delta-children-twinkle-stars-dual-sided-6-premium-sustainably-sourced-fiber-core-crib-and-toddler-mattress-waterproof-greenguard-gold-certified","brand":"Delta Children","condition":"new","product_category":"Furniture > Baby & Toddler Furniture > Cribs & Toddler Beds","material":"High-density thermo-bonded polyester (recycled PET) fiber core; knit fabric cover with waterproof vinyl backing","dimensions":"52x27.5x6 in","item_weight_unit":"lb","age_group":"infant","image_url":"https://kidsy.co/cdn/shop/files/new-delta-children-twinkle-stars-dual-sided-6-fiber-core-crib-mattress-white-7180091.jpg?v=1763083008&width=823","additional_image_urls":["https://kidsy.co/cdn/shop/files/new-delta-children-twinkle-stars-dual-sided-6-fiber-core-crib-mattress-white-7050006.jpg?v=1763083008&width=823","https://kidsy.co/cdn/shop/files/new-delta-children-twinkle-stars-dual-sided-6-fiber-core-crib-mattress-white-3827192.jpg?v=1763083008&width=823","https://kidsy.co/cdn/shop/files/new-delta-children-twinkle-stars-dual-sided-6-fiber-core-crib-mattress-white-9853346.jpg?v=1763083008&width=823","https://kidsy.co/cdn/shop/files/new-delta-children-twinkle-stars-dual-sided-6-fiber-core-crib-mattress-white-3572327.jpg?v=1763083008&width=823","https://kidsy.co/cdn/shop/files/new-delta-children-twinkle-stars-dual-sided-6-fiber-core-crib-mattress-white-1496078.jpg?v=1763083008&width=823"],"images":[{"id":"img-1773380480859-0","url":"https://kidsy.co/cdn/shop/files/new-delta-children-twinkle-stars-dual-sided-6-fiber-core-crib-mattress-white-7180091.jpg?v=1763083008&width=823","width":319,"height":447,"alt_text":"New Delta Children Twinkle Stars Dual Sided 6\" Fiber Core Crib Mattress product image (primary)","position":1,"attributes":{"text":"DC; Twinkle Stars; GREENGUARD; UL","colors":[{"color":"off-white / light beige","context":"main mattress cover/body"},{"color":"white","context":"background/studio backdrop and some label areas"},{"color":"blue","context":"DC logo, lower label band and other label graphics"},{"color":"yellow","context":"rectangular accent on the product label (headline area)"},{"color":"skin tones (peach/pink)","context":"photo of mother and baby on the label"},{"color":"green","context":"GREENGUARD certification sticker (bottom-right)"},{"color":"red and blue","context":"small American flag icon on product label"},{"color":"black / dark gray","context":"small printed text, barcode and fine details on label"}],"labels":["crib/toddler mattress (rectangular mattress)","mattress cover with subtle repeating icon/pattern","product label/sticker on mattress (with photo of mother and baby)","mother holding newborn baby (photo on label)","DC logo (blue)","green GREENGUARD certification sticker (bottom-right)","UL mark inside GREENGUARD sticker","small American flag icon on product label","barcode and small certification/feature icons on label","white studio/background","blue and yellow label graphics"],"flat_lay":false,"confidence":"medium","description":"A white/off-white crib or toddler mattress photographed standing upright against a white background. The mattress has a subtle repeating pattern and a product label near the top showing a photo of a mother holding a baby, a blue DC logo, and colorful label graphics. A green GREENGUARD certification sticker (with UL mark) is visible on the lower right of the mattress face."},"variant_ids":["47952365355288"]},{"id":"img-1773380480859-1","url":"https://kidsy.co/cdn/shop/files/new-delta-children-twinkle-stars-dual-sided-6-fiber-core-crib-mattress-white-7050006.jpg?v=1763083008&width=823","width":447,"height":447,"alt_text":"New Delta Children Twinkle Stars Dual Sided 6\" Fiber Core Crib Mattress product image 2","position":2,"attributes":{"text":"NON-TOXIC\nWATERPROOF AND STAIN RESISTANT\nMADE IN THE USA\nGREENGUARD GOLD\nDC\nDELTACHILDREN","colors":[{"color":"white","context":"main mattress cover and overall background"},{"color":"light gray","context":"subtle repeating pattern on mattress surface"},{"color":"light blue","context":"diagonal banner at the bottom background and elements in the product label"},{"color":"black","context":"large 'NON-TOXIC' text and some small label text"},{"color":"green","context":"GREENGUARD/UL badge at upper right"},{"color":"blue","context":"water droplet waterproof/stain resistant icon and accents in the product label"},{"color":"red","context":"Made in the USA badge and its circular border"},{"color":"yellow","context":"small banner accent on the product label photo"},{"color":"skin tones (peach/beige)","context":"mother and baby photo on the product label"},{"color":"dark navy/black","context":"DC logo mark and some text accents"}],"labels":["crib/toddler mattress","mattress cover with subtle repeating pattern","product label/photo of a mother and baby on mattress","DC brand logo","Delta Children brand text/logo","green GREENGUARD / UL badge (GREENGUARD GOLD)","blue waterproof/stain resistant droplet icon","red circular Made in the USA badge with American flag","large NON-TOXIC text banner at bottom","light blue diagonal banner/background at bottom","small colored icons/labels on product label (near photo)","barcode area on product label","white studio background"],"flat_lay":false,"confidence":"high","description":"Product image of a white crib/toddler mattress with a small photo label (mother and baby), certification badges to the right (GREENGUARD Gold, waterproof/stain resistant icon, Made in the USA), and a large 'NON-TOXIC' banner across a light blue strip at the bottom. The background is plain white."},"variant_ids":["47952365355288"]},{"id":"img-1773380480859-2","url":"https://kidsy.co/cdn/shop/files/new-delta-children-twinkle-stars-dual-sided-6-fiber-core-crib-mattress-white-3827192.jpg?v=1763083008&width=823","width":447,"height":447,"alt_text":"New Delta Children Twinkle Stars Dual Sided 6\" Fiber Core Crib Mattress product image 3","position":3,"attributes":{"text":"1 Waterproof Cover\n2 Ideal Firmness & Comfort Level\n3 Dual Sided for Long-Lasting Use\n\nDELTACHILDREN","colors":[{"color":"white","context":"background and some parts of the top cover and callout box background"},{"color":"light gray","context":"top cover base color (patterned layer) and bottom base layer edges"},{"color":"dark gray / black","context":"numbered circular callouts (black circles) and text/logo elements"},{"color":"white","context":"numbers inside the black callout circles and some label text"},{"color":"pale yellow / cream","context":"middle foam/core layer (illustrated foam)"},{"color":"pink (pale)","context":"horizontal band along the bottom of the image"},{"color":"medium gray","context":"shadowing and lower layer surfaces"},{"color":"black","context":"Delta Children stylized 'DC' logo and the 'DELTACHILDREN' wordmark"}],"labels":["illustrated cross-section of a mattress or mattress pad (three layers)","top waterproof cover layer with small circular pattern motifs","middle foam/core layer (yellowish foam)","bottom base/support layer (gray)","three black circular numbered callouts (1, 2, 3)","callout text box listing features (to the right of the layers)","Delta Children logo (stylized DC) and 'DELTACHILDREN' text at bottom right","pink horizontal band along the bottom of the image","white background","soft drop shadow under the layered illustration","3D perspective / isometric style rendering"],"flat_lay":false,"confidence":"high","description":"A schematic 3D cross-section illustration of a mattress or mattress pad showing three layers: a patterned waterproof top cover, a yellow foam core, and a gray base. Three numbered callouts (1–3) point to each layer and a callout box lists features: Waterproof Cover; Ideal Firmness & Comfort Level; Dual Sided for Long-Lasting Use. A Delta Children logo and a pale pink band appear at the bottom."},"variant_ids":["47952365355288"]},{"id":"img-1773380480859-3","url":"https://kidsy.co/cdn/shop/files/new-delta-children-twinkle-stars-dual-sided-6-fiber-core-crib-mattress-white-9853346.jpg?v=1763083008&width=823","width":447,"height":447,"alt_text":"New Delta Children Twinkle Stars Dual Sided 6\" Fiber Core Crib Mattress product image 4","position":4,"attributes":{"text":"Good For Baby.\nGood For The Environment.\n\nTHIS MATTRESS SAVES\n300 PLASTIC BOTTLES\nFROM THE LANDFILL\n\nDC\nDELTA CHILDREN","colors":[{"color":"white","context":"mattress cover, diaper on baby, and overall background"},{"color":"light gray","context":"subtle repeating pattern printed on the mattress cover"},{"color":"green","context":"large recycling arrows overlaid on the image, inner foam layer of the mattress with white pattern, callout/badge background, and bottle icon"},{"color":"dark green","context":"accent/outline of the recycling arrows and some badge elements"},{"color":"beige / light brown","context":"textured strip along the bottom of the image"},{"color":"skin tone","context":"baby's exposed skin"},{"color":"blue","context":"small DC logo text on the mattress corner and Delta Children branding"},{"color":"black / very dark gray","context":"top slogan text ('Good For Baby. Good For The Environment.')"},{"color":"white (icon/text)","context":"white icons/text inside the green badge (recycle symbol and bottle text)"}],"labels":["baby (infant) lying on mattress","mattress","mattress cutaway / exposed inner layer","green foam/inner layer with pattern","recycling arrows (three green arrows forming recycle symbol)","callout/badge","plastic bottle icon with '300'","recycle symbol (circular arrows)","DC logo (stylized 'DC') on mattress corner","Delta Children logo/text at bottom right","top slogan text","beige textured strip at bottom","white background","subtle pattern on mattress cover","baby wearing white diaper"],"flat_lay":false,"confidence":"high","description":"A baby in a white diaper lies on a white mattress shown with a cutaway revealing a green inner layer. Large green recycling arrows overlay the image to indicate recyclability. A green badge at the bottom-left states the mattress saves 300 plastic bottles from the landfill. DC / Delta Children branding appears near the mattress corner and bottom-right."},"variant_ids":["47952365355288"]},{"id":"img-1773380480859-4","url":"https://kidsy.co/cdn/shop/files/new-delta-children-twinkle-stars-dual-sided-6-fiber-core-crib-mattress-white-3572327.jpg?v=1763083008&width=823","width":447,"height":447,"alt_text":"New Delta Children Twinkle Stars Dual Sided 6\" Fiber Core Crib Mattress product image 5","position":5,"attributes":{"text":"Flip for Freshness\nBoth Sides are Waterproof to Keep The Mattress Clean and Fresh\nDUAL SIDED MATTRESS\nPROVIDES YEARS OF USE\nDC\nDELTACHILDREN","colors":[{"color":"white","context":"main surface of both mattress illustrations and overall background"},{"color":"light blue / sky blue","context":"outline and shading on mattress edges, header text \"Flip for Freshness\", and bottom banner background/accent"},{"color":"dark (black/dark gray)","context":"\"DUAL SIDED MATTRESS\" text, Delta Children (DC) logos, and some small text accents"},{"color":"medium gray","context":"secondary tagline text \"PROVIDES YEARS OF USE\" (appears darker gray/black)"},{"color":"pink / mauve","context":"curved bidirectional arrows between the two mattress illustrations"},{"color":"pale blue","context":"soft shading on the sides of the mattress illustrations (gives 3D effect)"}],"labels":["illustration / product diagram","two rectangular mattress illustrations (left and right)","curved bidirectional arrows (indicating flipping)","heading text: \"Flip for Freshness\"","explanatory text: \"Both Sides are Waterproof to Keep The Mattress Clean and Fresh\"","bottom banner area with product name and tagline","product name text: \"DUAL SIDED MATTRESS\"","tagline text: \"PROVIDES YEARS OF USE\"","Delta Children logo (stylized \"DC\") in bottom right","small DC logo on the lower-left of the left mattress illustration","light blue background accent at bottom","white background"],"flat_lay":false,"confidence":"high","description":"A product feature graphic showing two illustrated mattresses side-by-side with curved arrows between them and the heading \"Flip for Freshness.\" Text explains both sides are waterproof to keep the mattress clean and fresh. A bottom banner highlights \"DUAL SIDED MATTRESS - PROVIDES YEARS OF USE\" and includes the Delta Children (DC) logo."},"variant_ids":["47952365355288"]},{"id":"img-1773380480859-5","url":"https://kidsy.co/cdn/shop/files/new-delta-children-twinkle-stars-dual-sided-6-fiber-core-crib-mattress-white-1496078.jpg?v=1763083008&width=823","width":447,"height":447,"alt_text":"New Delta Children Twinkle Stars Dual Sided 6\" Fiber Core Crib Mattress product image 6","position":6,"attributes":{"text":"BIG LITTLE ONE\nDELTACHILDREN","colors":[{"color":"white","context":"crib frame, mattress, fitted sheet background, woman's shirt, picture frame border"},{"color":"light gray","context":"large text in framed wall art, some trim/shadows on crib and mattress"},{"color":"pastel pink","context":"heart shapes on wallpaper and small heart/shape pattern on pajamas"},{"color":"pastel teal / light aqua","context":"heart shapes on wallpaper and accents in pattern on pajamas"},{"color":"black","context":"brand logo mark and 'DELTACHILDREN' text in bottom-right; some small pattern details on pajamas"},{"color":"soft beige / skin tones","context":"faces and exposed skin of the woman, toddler, and infant"},{"color":"brown","context":"hair color of the woman, toddler, and baby"},{"color":"green","context":"foliage visible through the window"}],"labels":["adult woman (mother) leaning over crib","toddler girl leaning on crib rail","infant baby lying on back in crib","white wooden crib with vertical slats","crib mattress","fitted mattress cover/sheet","matching patterned pajamas on toddler and infant","white hair bow on baby","woman wearing white short-sleeve shirt","framed wall art with large text","pastel heart-patterned wallpaper","window with outdoor greenery visible","natural daylight lighting","woman's hand touching baby","toddler resting chin on hands","brand logo and text in bottom-right (Delta Children logo)"],"flat_lay":false,"confidence":"high","description":"A smiling adult woman and a toddler lean over a white crib to interact with an infant lying on a mattress. The children wear matching patterned pajamas; pastel heart-patterned wallpaper and framed wall art that reads 'BIG LITTLE ONE' appear behind the crib. A Delta Children logo is visible in the bottom-right corner."},"variant_ids":["47952365355288"]}],"price":"62.99 USD","sale_price":"52.99 USD","availability":"in_stock","group_id":"9031039156504","listing_has_variations":"false","variants":[{"sku":"DELTACHILDREN-761139033344-NEWOVERSTOCK","url":"https://kidsy.co/products/delta-children-twinkle-stars-dual-sided-6-premium-sustainably-sourced-fiber-core-crib-and-toddler-mattress-waterproof-greenguard-gold-certified?variant=47952365355288","image":{"id":"img-variant-47952365355288","url":"https://kidsy.co/cdn/shop/files/Frame_1982250568_2.svg?v=1763636251","width":927,"height":927,"alt_text":"New Delta Children Twinkle Stars Dual Sided 6\" Fiber Core Crib Mattress - 6\" variant image","position":1,"variant_ids":["47952365355288"]},"price":{"value":59.99,"currency":"USD"},"title":"New Delta Children Twinkle Stars Dual Sided 6\" Fiber Core Crib Mattress - 6\"","option1":"6\"","sale_price":{"value":38,"currency":"USD"},"variant_id":"47952365355288","availability":"in_stock"}],"item_group_title":"New Delta Children Twinkle Stars Dual Sided 6\" Fiber Core Crib Mattress  (White)","size_system":"US","gender":"unisex","is_digital":"false","review_count":3,"star_rating":5,"q_and_a":[{"a":"The Consumer Products Safety Commission (CPSC) requires all full-size baby crib mattresses to be at least 27 and ¼ inches in width by 51 and ¼ inches in length, with a maximum thickness of six inches.","q":"What is the Standard Size of a Crib Mattress?"},{"a":"The CPSC requires that full-size baby cribs have a standard width of 28 inches and a standard height of 52 and ⅜ inches (with a “pull or minus factor” of ⅝ inches). Because of this variation, check the recommended mattress size on the crib’s box or assembly instructions.","q":"What is the Standard Size of a Baby Crib?"},{"a":"A crib mattress should fit very snugly in the crib — no more than two fingers of space should exist between the mattress and the crib frame. A mattress that is too small can be a suffocation and entrapment hazard.","q":"How Can I Tell if a Crib Mattress Fits in my Crib?"},{"a":"Crib mattresses should be firm. Soft surfaces can pose a suffocation hazard and increase the risk of SIDS. Test firmness by pressing the center and edges — the mattress should snap back immediately when pressure is released.","q":"How Firm Should a Crib Mattress Be?"},{"answer":"This Twinkle Stars 6\" mattress is described as a firm, dual-sided 6\" fiber-core crib/toddler mattress (suitable for newborns and toddlers) but the manufacturer does not publish an ILD value or a 1–10 firmness rating for this model. You can see the product’s firm construction and 6\" fiber-core spec on the Delta Children product page. [1]","category":"safety","question":"What is the mattress firmness expressed as an industry measure (ILD) or on a 1–10 scale for the Delta Children Twinkle Stars 6\" mattress?","citations":[{"url":"https://www.deltachildren.com/products/twinkle-stars-limited-fiber-core-crib-and-toddler-mattress","index":1,"title":"Delta Children — Twinkle Stars Limited Recycled Fiber Core Crib and Toddler Mattress (product page)"}],"confidence":"high","source_type":"web_search","generated_at":"2026-03-12T11:29:16.998Z","answerability":"needs_additional_info","source_detail":"brand product page / product_description (firm description, 6\" fiber core); no ILD or numeric firmness published on page","is_reformatted":true,"uncertainty_flag":false,"has_substantive_info":true},{"answer":"We confirm this mattress meets required flammability testing and contains no added toxic fire retardants, but Delta Children’s public product information does not specify a named fire‑barrier material or exact construction used to meet those standards. Independent reporting found Delta did not disclose full mattress components, so a specific barrier (wool, rayon, woven fire sock, etc.) is not listed in available documentation; the product is GREENGUARD Gold certified and tested to CPSC/ASTM requirements. [1] [2]","category":"safety","question":"The listing says it meets flammability testing and contains no toxic fire retardants — what specific fire-barrier material or construction is used to meet flammability standards?","citations":[{"url":"https://www.deltachildren.com/products/twinkle-stars-limited-fiber-core-crib-and-toddler-mattress","index":1,"title":"Delta Children product page for Twinkle Stars mattress (product claims: GREENGUARD Gold, no toxic fire retardants, meets flammability testing)"},{"url":"https://www.consumerreports.org/babies-kids/crib-mattresses/best-crib-mattresses-a9683309833/","index":2,"title":"Consumer Reports coverage noting Delta Children did not disclose full mattress components"}],"confidence":"high","source_type":"web_search","generated_at":"2026-03-12T11:29:16.998Z","answerability":"needs_additional_info","source_detail":"brand product page and Consumer Reports coverage noting lack of component disclosure","is_reformatted":false,"uncertainty_flag":false,"has_substantive_info":true},{"answer":"This mattress has a soft knit outer cover with a waterproof layer/backing on both sides — it is not described as a full vinyl shell on the Delta product page. The product page for this 6\" recycled-fiber Twinkle Stars mattress does not list the cover as removable, so clean the waterproof backing with a damp cloth or spot-clean; do not expect the mattress cover to be machine-washable. If you need a Twinkle Stars model with a fully removable, machine-washable knit cover, Delta also sells a “Breathable” Twinkle Stars variant that explicitly lists a removable, machine-washable cover. [1] [2]","category":"care_instructions","question":"Is the outer cover a waterproof vinyl shell or a knit cover with a waterproof backing (the product description mentions both)? If it is removable, can the cover be machine washed and what are the care instructions?","citations":[{"url":"https://www.deltachildren.com/products/twinkle-stars-limited-fiber-core-crib-and-toddler-mattress","index":1,"title":"Delta Children — Twinkle Stars Limited Recycled Fiber Core Crib and Toddler Mattress (product description: knit cover with waterproof backing)"},{"url":"https://www.deltachildren.com/collections/mattresses/products/twinkle-stars-breathable-baby-bed-crib-mattress-and-toddler-mattress-with-removable-machine-washable-cover-greenguard-gold-waterproof-sustainably-sourced-core-fiber-core","index":2,"title":"Delta Children — Twinkle Stars Breathable Mattress (listing that specifies a removable, machine-washable cover)"}],"confidence":"medium","source_type":"web_search","generated_at":"2026-03-12T11:29:16.998Z","answerability":"needs_additional_info","source_detail":"Delta Children product page for this Twinkle Stars model (product description) and Delta Children 'Twinkle Stars Breathable' product page (removable/machine-washable cover)","is_reformatted":false,"uncertainty_flag":false,"has_substantive_info":true},{"answer":"This mattress has a durable, waterproof vinyl cover and is GREENGUARD Gold certified; Delta states its crib mattresses are non‑toxic and tested to meet/exceed CPSIA/phthalate requirements. [1] We do not publish the mattress’s exact polymer formulation (so we can’t confirm whether the vinyl backing contains PVC) or a public lab report listing the specific phthalates tested for this SKU; the applicable U.S. rules and testing programs used for children’s sleep products restrict and test for a set of phthalates including DEHP, DBP, BBP and the additional phthalates later restricted by the CPSC (e.g., DINP, DIBP, DPENP, DHEXP, DCHP). [2]","category":"ingredients","question":"Does the waterproof material (backing or vinyl) contain PVC or other plastics of concern, and which phthalates (if any) were specifically tested for in the GREENGUARD/ compliance testing?","citations":[{"url":"https://www.deltachildren.com/products/twinkle-stars-limited-fiber-core-crib-and-toddler-mattress","index":1,"title":"Delta Children — Twinkle Stars Recycled Fiber Core Crib and Toddler Mattress (product page)"},{"url":"https://www.cpsc.gov/Newsroom/News-Releases/2018/CPSC-Prohibits-Certain-Phthalates-in-Childrens-Toys-and-Child-Care-Products","index":2,"title":"U.S. CPSC — CPSC Prohibits Certain Phthalates in Children’s Toys and Child Care Products (news release)"}],"confidence":"medium","source_type":"web_search","generated_at":"2026-03-12T11:29:16.998Z","answerability":"needs_additional_info","source_detail":"Delta Children product page (product_features) and CPSC phthalate rule/news release (CPSIA/CPSC testing requirements)","is_reformatted":false,"uncertainty_flag":true,"has_substantive_info":true},{"answer":"We are not aware of any published, independent laboratory tests (airflow-rate or thermal/heat‑retention measurements) that directly compare this Twinkle Stars 3D‑knit cover to a standard vinyl‑only crib mattress. The Delta Children product page describes the knit cover as a “three‑dimensional structure that allows air to flow,” but that is a product feature statement, not a third‑party airflow/thermal test [1]. Note that GREENGUARD Gold refers to low chemical emissions, not measured breathability or heat‑transfer performance, and available third‑party reviews report informal breathability checks rather than formal lab testing [2][3].","category":"performance","question":"Has the mattress been independently tested for breathability or heat retention (e.g., airflow rate, thermal testing) compared with a standard vinyl-only crib mattress, to support the claim of the 3D airflow knit cover?","citations":[{"url":"https://www.deltachildren.com/products/twinkle-stars-limited-fiber-core-crib-and-toddler-mattress","index":1,"title":"Delta Children — Twinkle Stars Limited Recycled Fiber Core Crib and Toddler Mattress (product page; describes 3D knit cover) "},{"url":"https://ogs.ny.gov/greenny/sustainability-certifications-and-standards","index":2,"title":"New York OGS — Summary of GREENGUARD / GREENGUARD Gold (what the certification covers) "},{"url":"https://www.rosenberryrooms.com/best-breathable-crib-mattresses/","index":3,"title":"Rosenberry Rooms — breathability comparison/article (examples of informal tests, not lab airflow/thermal reports) "}],"confidence":"medium","source_type":"web_search","generated_at":"2026-03-12T11:29:16.998Z","answerability":"needs_additional_info","source_detail":"Delta Children product page (product_description); GREENGUARD certification summary (certification scope); independent review coverage (informal breathability checks)","is_reformatted":false,"uncertainty_flag":true,"has_substantive_info":true},{"answer":"Our listing shows Dimensions 27.5\" W × 52\" L × <6\" H and a 6\" recycled fiber core, but some retailer/spec sheets list the finished mattress height as 5.0\" — published specs are inconsistent, so we cannot state a single thickness to the nearest 0.1\" with certainty. For fit tolerance: the mattress is sold as a standard full‑size (27.5\" × 52\") and the CPSC minimum mattress size is 27 1/4\" × 51 1/4\" with a maximum thickness of 6\"; check your crib’s internal measurements and make sure there’s no more than a two‑finger gap between mattress and crib side to confirm a snug/safe fit. [1][2][3]","category":"fit_and_sizing","question":"Exact dimensions: what is the precise thickness to the nearest 0.1\" (the listing states '<6\"') and the exact width/length tolerance so I can confirm a snug fit in older or non-standard cribs?","citations":[{"url":"https://www.deltachildren.com/products/twinkle-stars-limited-fiber-core-crib-and-toddler-mattress","index":1,"title":"Delta Children product page — Twinkle Stars crib & toddler mattress (lists 27.5\" x 52\" x <6\")"},{"url":"https://www.cpsc.gov/s3fs-public/Final-Rule-Safety-Standard-for-Crib-Mattresses.pdf","index":2,"title":"CPSC final rule / crib mattress size and safety requirements (minimum sizes and 6\" max thickness)"},{"url":"https://www.babylist.com/gp/delta-children-twinkle-stars-breathable-baby-bed-crib-and-toddler-mattress/45006/1741090","index":3,"title":"Retail/spec listing (example) showing finished mattress height listed as 5.0\""}],"confidence":"medium","source_type":"web_search","generated_at":"2026-03-12T11:29:16.998Z","answerability":"needs_additional_info","source_detail":"Delta Children product page (dimensions) and retailer/spec-sheet/manual listings (conflicting 5.0\" vs <6\"), plus CPSC crib mattress size guidance.","is_reformatted":false,"uncertainty_flag":true,"has_substantive_info":true},{"answer":"This mattress is firm and already has a waterproof layer on both sides, so a thin protector isn’t required for waterproofing or firmness. If you choose to use one, pick a thin, crib-specific protector that does not add cushioning and keep a tight-fitting crib sheet over it — avoid padded toppers or loose covers because leading safe-sleep guidance recommends a firm sleep surface with only a fitted sheet to reduce SIDS/suffocation risk. [1] [2] [3] [4]","category":"compatibility","question":"Will adding a standard thin mattress protector or fitted sheet designed for crib mattresses change the mattress firmness enough to affect safety recommendations (i.e., is using a protector/sheet recommended or discouraged)?","citations":[{"url":"https://www.deltachildren.com/products/twinkle-stars-limited-fiber-core-crib-and-toddler-mattress","index":1,"title":"Delta Children — Twinkle Stars Recycled Fiber Core Crib and Toddler Mattress (product page)"},{"url":"https://www.aap.org/en/patient-care/safe-sleep/","index":2,"title":"American Academy of Pediatrics — Safe Sleep guidance (recommend firm mattress + fitted sheet)"},{"url":"https://www.cpsc.gov/safety-education/safety-guides/cribs/crib-safety-tips","index":3,"title":"U.S. Consumer Product Safety Commission — Crib Safety Tips (use fitted bottom sheet; avoid soft bedding)"},{"url":"https://www.cdc.gov/sudden-infant-death/sleep-safely/index.html","index":4,"title":"CDC — Safe Sleep and Your Baby (supports AAP guidance)"}],"confidence":"high","source_type":"web_search","generated_at":"2026-03-12T11:29:16.998Z","answerability":"needs_additional_info","source_detail":"Delta Children product page (product_description) and AAP/CPSC/CDC safe-sleep guidance","is_reformatted":false,"uncertainty_flag":false,"has_substantive_info":true}],"reviews":[{"date":"Jun 13 2020","title":"BEST MATTRESS EVER","rating":5,"content":"We just got home from the hospital yesterday and were so excited to put our littlest one in his new bed and it’s been a GAME changer. I can’t put him in there with out him falling asleep within 5-10 minutes. It’s truly amazing I’ve never had a better crib mattress for my kiddos. 10/10 recommend. Your baby needs this.","reviewer_name":"Anastasia Shbeeb"},{"date":"Jun 12 2020","title":"Worth every buck","rating":5,"content":"Okay I have to say I love this mattress for my girl! She was in need of a new mattress and I am so glad we got this one! Her naps have been longer and she’s been sleeping through the night! This mattress is super easy to clean and firm without that uncomfortable feeling! Good mattress, good sleep!","reviewer_name":"Nicole"},{"date":"Jun 09 2020","title":"Such a great quality mattress","rating":5,"content":"This is one of the best crib mattresses I have ever had. It’s exactly as the brand said. It is light weight , waterproof , and it’s also very easy to clean.","reviewer_name":"Alexandria"},{"date":"Jun 13 2020","title":"BEST MATTRESS EVER","rating":5,"content":"We just got home from the hospital yesterday and were so excited to put our littlest one in his new bed and it’s been a GAME changer. I can’t put him in there with out him falling asleep within 5-10 minutes. It’s truly amazing I’ve never had a better crib mattress for my kiddos. 10/10 recommend. Your baby needs this.","reviewer_name":"Anastasia Shbeeb"},{"date":"Jun 12 2020","title":"Worth every buck","rating":5,"content":"Okay I have to say I love this mattress for my girl! She was in need of a new mattress and I am so glad we got this one! Her naps have been longer and she’s been sleeping through the night! This mattress is super easy to clean and firm without that uncomfortable feeling! Good mattress, good sleep!","reviewer_name":"Nicole"},{"date":"Jun 09 2020","title":"Such a great quality mattress","rating":5,"content":"This is one of the best crib mattresses I have ever had. It’s exactly as the brand said. It is light weight , waterproof , and it’s also very easy to clean.","reviewer_name":"Alexandria"},{"date":"${date}","title":"${title}","rating":5,"content":"${body}","reviewer_name":"${name}"}],"target_countries":"US","canonical_url":"https://kidsy.co/products/delta-children-twinkle-stars-dual-sided-6-premium-sustainably-sourced-fiber-core-crib-and-toddler-mattress-waterproof-greenguard-gold-certified"}}