New Happiest Baby Sleepea 5-Second Baby Swaddle (Rose Stars - Medium) product image (primary)
Front-facing studio image of a light pink sleeveless baby swaddle with white star print, center front zipper, mesh panels at midsection, and rounded bottom.

Happiest Baby

New Happiest Baby Sleepea 5-Second Baby Swaddle (Rose Stars - Medium)

4.24/5 (1,293)
$21.99$29.95-27%
In Stock

The Happiest Baby Sleepea 5-Second Baby Swaddle is a baby sleep sack designed for safe, easy swaddling from birth through transition. It is made from 100% organic cotton with breathable mesh panels at the shoulders and legs, and features inner flaps, extra-quiet Velcro, and a two-way zipper for escape-proof security and quick diaper changes. The medium size fits babies approximately 12-18 pounds, and the swaddle can be used with arms in or snapped open for arms-out sleep training.

Color
Charcoal Stars
Material
100% Organic GOTS cotton
Style
convertible, a-line

Color

Rose Stars

Size

Medium
GTIN
817720022973
MPN
HAPPIESTBABY-817720022973-NEWOVERSTOCK

Specifications

Award-winning 5-Second Swaddle made from 100% organic GOTS cotton that simplifies swaddling with secure inner bands, breathable mesh, shoulder snaps for arms-out transition, and a two-way zipper for easy diaper changes.

100% organic GOTS cotton; breathable mesh panels; secure inner arm bands and leg flap; shoulder snaps for arms-out transition (not on X-Small); two-way/double zipper for top or bottom access; quiet adjustable fastener; TOG 0.5 (all-seasons).

Color
Charcoal Stars · gray
Material
100% Organic GOTS cotton
Style
convertible, a-line
Occasion
sleepwear, everyday
Gender
unisex
Age Group
infant
Condition
new

Additional Attributes

  • Award-winning
  • 100% organic cotton
  • GOTS-certified
  • Soft, breathable cotton
  • Breathable mesh panels (all-seasons design)
  • Secure inner bands
  • Special inner arm bands and leg flap keep Baby snug all night
  • Arms-Out Transition with snaps at shoulders
  • X-Small Sleepea does not have snaps at the shoulders
  • Speedy two-way zipper (opens from top or bottom) for smoother diaper changes
  • Double-zipper
  • Quiet adjustable fastener
  • Machine washable
  • Care instructions: Cool or cold water with like colors, tumble dry low
  • Thermal Overall Grade (TOG) rating of 0.5
  • Prevents wild hand movements that can startle little ones awake
  • Mimics the snug embrace of the womb
  • Tie-Dye Sleepea has no mesh panels; Tie-Dye pieces are hand-dipped so designs may vary
  • Created by Dr Harvey Karp; designed with baby safety in mind

Image Analysis

1 images
New Happiest Baby Sleepea 5-Second Baby Swaddle (Rose Stars - Medium) product image (primary)
01high

Front-facing studio image of a light pink sleeveless baby swaddle with white star print, center front zipper, mesh panels at midsection, and rounded bottom.

Flat lay
pink knit fabricwhite star printcenter front zippermesh side panelsrounded bottom hemhourglass silhouettesleeveless swaddle shapecrew neck openingsmall zipper pullstudio white backgroundsoft even lighting

Brand PDP Lookup

Brand
Happiest Baby

Baby Sleep Sack | Sleepea Swaddle

Also Seen Here

4 retailers
  • baby.zola.com
    medium

    Sleepea® 5-Second Baby Swaddle

    Happiest Baby

    View listing →
  • amazon.com
    medium

    Happiest Baby Sleepea 5-Second Swaddle - 100% Organic Cotton Baby Swaddle Blanket - Doctor Designed Promotes Healthy Hip Development - 3-Pack Bundle (Graphite Planets, S, M, L)

    Happiest Baby

    View listing →
  • getyourbestrest.com
    medium

    Sleepea® 5-Second Baby Swaddle

    Happiest Baby

    View listing →
  • happiestbabys.com
    high

    Happiest Baby Sleepea 5-Second Swaddle – 100% Organic Cotton Baby Swaddle Blanket – Doctor Designed Promotes Healthy Hip Development (Graphite Planets, Medium)(Rose Stars)

    Happiest Baby

    View listing →

Documents & Data

Customer Reviews

1,293 total
4.24

1,293 reviews · out of 5

Snug swaddle

Monica Bassett

This swaddle snugs my baby just right and is Soo easy to use. Love it going to buy two more 😁

Sleep sack

Haley Upchurch

This sleep sack is perfect for my baby! The Velcro straps are wonderful and make for an easy wear. My baby sleeps at least 8 hour stretches since I bought this when he was 6 weeks old!

Exceptional Swaddle

Fran

Gave it as a gift — the baby loves being in it — the family loves the calming and soothing effect the swaddle offers. Easy to use and was so appreciated! It’s lovely when a gift is helpful and is loved too! Highly recommend!

Game changer, life saver

RF

This was the last swaddle we ever bought (well, we got a few in different colors) after a long unsuccessful journey of other styles/brands. Our baby monster would hulk out of everything we got and would wake themself up from it every night like clockwork. These swaddles are the easiest to put on, baby loves them, and stays in and asleep more consistently. They’re also easy to clean (I recommend velcro-ing them as if baby were wearing so they don’t stick to other items in the wash) and the 2-way zipper makes diaper changes less of a hassle. 5 stars, will buy again!

Best sleep sack

Nicholas Boles

Hands down the best sleep sack out we have tried. I’ve tried at least 10 different brands, Halo and Love to Dream were my previous favorites, but this one takes the cake. My two-month-old twin girls sleep better every single time they wear these. Easy 10/10. Wouldn’t waste money on anything else

Love love love!!

Flip flop tans

We are big fans of the SNOO from having our first, and someone accidentally gifted us one of these swaddles thinking it was specifically for the SNOO. We ended up taking it to the hospital — and quickly wished we had brought more. When we had twins a year later, this swaddle was at the top of our hospital packing list. It’s easy to use, works great, and was incredibly helpful during those early newborn days. Now it’s my go-to gift anytime I need a newborn present. Highly recommend!

Ashley Collins

Quick and easy to use!

Victoria

Cute

Victoria

Cute

This is it!

Julia Erickson

Buy it! We are getting much more sleep because of it! Thank you Happiest Baby

Our favorite swaddle

Samantha Elgut

We love the Sleepea so much! Very comfortable and easy to use. Helps our baby sleep comfortably.

Current favorite

Hanna

So far this is our newborn‘s favorite swaddle! She tolerates it well at night and allows us to get a couple hours of Sleep at a time.

Best Swaddle!

Satisfied Momma

This swaddle worked perfectly once our newborn started to get strong enough to fight the muslin blankets! It kept her contained and her startle at bay until she started to roll. She slept through the night easily in these.

Best swaddle

KatelynT

This is the only swaddle you need. We were frustrated with the more traditional Velcro swaddles either coming loose, inching up, or being too tight in the hips. After trying many brands, we found the sleepea and it is all we use now. It’s simply to put on at night after changes, is light and breathable, and most importantly, secure. I don’t go to sleep worrying about my baby pulling this loose.

Our favorite swaddle!

DM

We tried 3 different brands/styles of swaddles for our newborn. This is the only one that he didn’t fight, so we bought several more to rotate through. We used size medium from the start. It’s very easy to use, especially managing it during nighttime feedings!

Saved our sleep

Samantha Oh

Our baby broke through ever swaddle. This swaddle saved our sleep. Since 5 weeks old she’s been sleeping 9pm - 7am. Don’t event think about it just buy it.

The best swaddle ever!

Savina Bachers

We tried a whole lot of different swaddles and nothing worked quite as well as this one. Our baby sleeps in it without a peep all night.

Sarah

I have only used it one night so far so take this with a grain of salt, but WOW! Last night was a struggle getting him to sleep. Waking IMMEDIATELY after putting him in the bassinet. Opened my Sleepea swaddle that had arrived just hadnt bothered to unbox. Washed it and used it. Y’all….my velcro baby slept over 4 hours the first stretch. Usually sleeps 2-3+ hours in the first stretch. He woke to nurse briefly and change diaper, swaddled up again and slept another 2+ hours. Took Dr Karp’s advice also about laying him down when he was sleepy, not asleep. Ordering another swaddle in case this one gets dirty.

Adam

Bought 1 to trial for my newborn. As a first time dad, this is one of the best purchases we’ve made so far. Easy to use and my son seems prefer it to other swaddles. Great product. Will be buying more.

kalisa dixon

Love it

Anne

I love it

Anne

I love it

Our #1 baby purchase of all time

CAB

My husband says “swaddling with receiving blankets is an outdated technology and should be eliminated.”! This swaddle is so much safer than our other swaddle with external wing flaps. We have had six babies and now on our 7th child we finally get to enjoy a superior product. Our baby loves it and it helps baby fall asleep!! Best money I’ve spent this year. Bought 2 more already for a friend. Especially like having a lightweight version for daily use as baby wears warm sleepers all day and we do not want baby to overheat. We own comforter and lightweight versions. NOTE: our baby was in size medium by 9 lbs or so. Still in medium at 12 lbs.

Worked Great for Our 3-4 Month Old!

Emmanuel Hamgeri

Had challenges with other swaddles this one did the trick and is still working, he's 4 months now.

This is the best swaddle

Daena Anzalone

We had the Aden and anais swaddles and they sucked. We needed something that would last and was simple. This is it! We keep our room at 65° and use the comforter swaddle for that. The tie dye swaddle is .8 tog and great for warmer rooms. It’s honestly so easy to swaddle. My babe is in a size medium right now and it fits great. She’s growing and will be in a large once 18 pounds. She is able to now get her arms out, at 4 months and 14 pounds. When washing we keep the Velcro together so other things don’t get stuck to it and it dries easier. We wash this every couple weeks unless it gets spit up on it. The price is definitely justified with the ease of it, the fact it stays on and in place, and the longevity. Also they are cute designs!

Snuggly and easy

Alicia

This swaddle is super easy to use and extremely cozy. Baby sleep great when snuggled up in this swaddle. Also, the sizes seem to run a little small. My baby fit great in a size medium starting around 9 lbs.

A Total Win

Stephanie Schroeder

We had to stop traditional blanket swaddling when our LO kept squirming out of it around 6 weeks. This was the *only* other swaddle that worked for us—and it really does only take 5-seconds! My only regret is that we didn’t start using it sooner, because he is turning three months soon and we’re going to have to quickly wean him out of it because he’s starting to show signs of rolling. And while he’ll sometimes wiggle his arm out of one side (he’s very determined!), usually if we just tighten up the internal wrap, he will stay nicely bundled all night long. I also do think the weight range is real tight towards the end—he was like a stuffed sausage in a small and was about a pound under the weight limit. Anyway… Just a few things to consider, but overall, we are incredibly happy.

Perfect swaddle!

Paige Rodriguez

This is the perfect swaddle! After seeing the halo swaddle bunch up over my baby’s face one night I had to find another solution. This swaddle is just that, no loud Velcro, so easy to use and my baby loves it! I love that it’s breathable and I don’t have to worry about her being too hot like I did with her previous halo swaddles. I wish I had found it sooner and recommend it to all my mom friends! It’s very high quality and holds up well even with daily washes. I bought two more immediately!

Such a big help

Lauren Fisher

So cute and soft and big help with getting baby to get restful sleep.

Best swaddle by far!

Nicole Wizel

Only one my baby couldn’t escape! This is the only swaddle you will need, it is fool proof.

Reddit Insights

4 threads · r/Buyingforbaby, r/sleeptrain, r/SnooLife

The Sleepea 5-Second Swaddle is praised for its ease of use and escape-proof design but raises concerns about sizing, rashes, and safe transitioning for rolling babies.

mixed sentiment100% match

Mixed sentiment: positive feedback on ease of use and design, coupled with negative experiences regarding rashes, sizing issues, and conflicting advice on rolling safety.

Themes

Ease of use and escape-proof designpositive
Sizing and fit issuesnegative
Transitioning for rolling babiesmixed
Skin irritation and rashesnegative

Use Cases

  • Newborn swaddling with arms in
  • Transitioning to arms-out sleeping for rolling babies

Watch Out For

mediumThe inner chest flap and leg strap may still restrict rolling even with arms out, contrary to some official guidance.
mediumSome babies develop rashes or skin irritation from the fabric or tight fit.
lowSizing runs small, and older/larger babies may outgrow it quickly.

Community Q&A

Is the Sleepea safe for rolling babies with arms out?
Mixed advice; some say arms-out is safe per manufacturer, while others prefer switching to a sleep sack without chest flaps to avoid restricting movement.
Does the Sleepea cause skin rashes?
Some babies have developed rashes, possibly from the fabric or tight fit; switching to organic cotton alternatives like Ergopouch resolved the issue.

Compared To

vs Halo SleepSack swaddle

Some users prefer the Halo for better fit and fewer skin issues, while others find Sleepea easier to use.

vs Ergopouch sleep sack

Ergopouch is recommended as an alternative for rolling babies due to no chest compression and better fabric for sensitive skin.

vs SNOO Sack

The Sleepea is a standalone version of the SNOO Sack, but some confusion exists about using SNOO Sacks outside the bassinet.

Source Threads

  • Sleepea Swaddle Experiences and Rash Concern

    I bought one for my baby and it gave her rashes. she also hated it. I think maybe it’s because they’re made small? I tried the halo and she liked that one better. / Oh wow, I literally just came across this thread while looking up rashes. We tried the Sleepea too and my baby also got rashes. I wasn’t sure if it was the fit or the fabric, but it didn’t work for us either. We switched to ergopouch and haven’t had skin issues since.

    r/BuyingforbabyView thread →

  • Stopping Sleepea Use and Rolling Safety

    Once rolling started for us, we moved away from anything with chest flaps or straps, even with arms out. It just made me nervous about limiting movement. We transitioned to sleep sacks at that point and used ergopouch. / We’re in the same position as you… doctor told me to start transitioning baby out of SNOO because we don’t want to restrict baby’s movement. Doc said that could delay baby’s progress. / I am still using the swaddle with arms out and she’s been rolling in her sleep so I guess it isn’t restricting her movement.

    r/sleeptrainView thread →

  • Confusion Between Sleepea and SNOO Sacks

    Are the Happiest Baby swaddles the ones that don’t attach to the SNOO? I just bought one to try. / Yes, the Sleepea is the standalone swaddle. It’s like the SNOO sack but without the clips. It’s great for travel or when you’re not using the SNOO. / I loved it but my baby got a rash from it too. We had to stop using it.

    r/SnooLifeView thread →

  • Sleepea Swaddle for Transitioning Rolling Babies

    We used the Sleepea with arms out for a few weeks after our baby started rolling, but we eventually switched to a regular sleep sack because the chest band seemed to still restrict her a bit. She was getting frustrated when trying to roll back. / I felt the same way. The inner flap is pretty snug. We moved to an Ergopouch and it’s been much better for her movement.

    r/SnooLifeView thread →