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*GOTS (Global Organic Textile Standard)
Sleepea 5-Second Swaddle
Step 1
This one of a kind baby swaddle was created by Dr. Harvey Karp, America’s world-renowned & celebrated pediatrician. Dr. Karp is the doctor whose 5 S’s started the Swaddle Revolution, and he designed every detail of Sleepea with baby safety—and parent sanity—in mind. Sleepea is the ultra-soft, ultra-easy baby swaddle that helps babies be happier and sleep longer!
Step 2
· Made with 100% organic cotton
· Special inner arm bands and leg flap keep even little Houdinis bundled all night
· Perfect for healthy, growing hips (International Hip Dysplasia Institute seal of approval)
· Extra-quiet Velcro, so light sleepers don’t startle awake with diaper changes
· Breathable mesh—at shoulders and legs—to reduce risky overheating
· Arm openings that are easy to unsnap for babies who prefer their arms out
Double-zipper—opens from top or bottom—for easy midnight diaper changes
Step 3
We’ve worked hard to think of it all!
“The Winner…This swaddle is magic!” —NY Magazine
“The Sleepea is the most effective swaddle we tested...it’s safe, comfortable, and easy to use.” —NY Times
“Get The Perfect Swaddle In Just 5 Seconds…” —Romper
SNOO Smart Sleeper Bassinet
A responsive baby bed that boosts sleep with gentle rocking and white noise. Plus, our one-of-a-kind swaddle keeps babies in a safe position...for all naps and nights!
- Your 24/7 helper
- Adds 1-2 hours of sleep per night*
- Calms most fussing in under a minute**
- Automatically sleep trains
- Responsive when you’re asleep
- Integrated mobile app for daily sleep reports
- Secure swaddling to prevent risky rolling
*According to an internal study of 42,855 infants.
**Möller EL, de Vente W, Rodenburg R. Infant crying and the calming response: Parental versus mechanical soothing using swaddling, sound, and movement. PLoS One. 2019 Apr 24;14(4):e0214548. doi: 10.1371/journal.pone.0214548. PMID: 31017930; PMCID: PMC6481793.
SNOO Sleep Sack
This swaddle sack was created by pediatrician Dr. Harvey Karp, whose 5 S’s started the Swaddle Revolution. Made for use only in the SNOO Smart Sleeper.
- SNOO wings keep baby safely on the back
- 100% organic GOTS (Global Organic Textile Standard) cotton
- Unique inner arm bands and leg flap
- International Hip Dysplasia Institute approved*
- Extra-quiet Velcro
- Breathable mesh helps prevent overheating
- Arm openings for arms-out sleeping
- Double-zipper for easy diaper changes
*Hip-Healthy Swaddle according to International Hip Dysplasia Institute (2021).
SNOObear White Noise Lovey
This teddy has a white noise machine in its tummy that plays the same sounds babies love in SNOO, and a few soothing extras…all designed by Dr. Harvey Karp. Plus, SNOObear responds to cries for up to 3 hours after the sound stops!
- Soft and snuggly teddy
- Finger holes for puppetry fun
- 30- or 60-minute shushing timer
- Built-in stroller strap for travel!
SNOO Baby Bassinet Fitted Sheet
This fitted sheet was designed to perfectly fit the SNOO Smart Sleeper Bassinet.
- Made from premium soft and breathable 100% cotton
- Crafted for an optimal fit wash after wash
Baby Bodysuit Bundles
The classic baby bodysuit just got a major upgrade!
- 100% organic GOTS (Global Organic Textile Standard) cotton
- Lapped collar for easy outfit changes
- Snaps for no-fuss diaper duty
- Hand-drawn, gender-neutral designs
Happiest Baby on the Block Book
A parenting book by Happiest Baby founder and CEO, Dr. Harvey Karp.
- Updated with latest insights into infant sleep, bedsharing, swaddling, breastfeeding, and SIDS risk
- Describes the “calming reflex” and how to trigger it
Kaylee
2025-08-26 15:02:05
As a first time mom, trying to swaddle with a blanket was an absolute nightmare, my husband and I just couldn't figure it out and baby kept wiggling out of the blanket. We bought several different types of swaddle sacks, but the sleepea is hands down the best swaddle we have tried.I am going to put the review I wish I found when looking for a swaddle:1. Material: Very light weight and soft. We live in Florida and baby boy was born right in the middle of summer, so we were also worried about him being too hot, but the mesh venting helps keep him cool and makes us feel so at ease. We have not had any skin irritation issues with this swaddle at all.2. Velcro: the Velcro portion that swaddles the baby is amazing and such a genius concept. It makes it ease to get baby in the swaddle snug and at a comfort level that they like. The Velcro is also very quiet compared to other types of Velcro. It does still make noise, so don't be fold thinking it's noiseless.3. Fit: The other swaddle sacks have so much fabric and bunched up near his face, which made me so nervous. The Sleepea is designed so well that it does not bunch up near the babies face and fits them very well. I noticed on other swaddles the zippers hit under their chin or rub against their neck, but there is a little zipper garage (lol not sure what it called) that covers the zipper, so it doesn't touch their face.4. Usability: It really lives up to the name "5-second swaddle", it is that quick and east to get your baby into the swaddle. Our baby does occasionally get his arm out of the swaddle (he is a little Houdini), but the design keeps his hand in the sack still, but we do at times find his fingers poking out of the top (he is 3 months old, so he wants his fingers in his mouth constantly). But, it's not that much of an issue, and it doesn't seem to bother him. I also love that we can continue using the swaddle with his arms out when he starts rolling as there are little plastic buttons on the sides, so you can put their arms through.Overall, our baby boy absolutely loves it. We made the mistake of only buying 1 in the beginning and ended up buying 3 newborn sizes and 3 of the next size up.Our baby is now 3 months and uses this swaddle for every nap and at night. He loves it so much that when he is swaddled, he instantly calms down and falls asleep in a matter of minutes.If you are a first time parent (or even if you aren't) I cannot recommend this swaddle enough.
Summer
2025-08-25 10:32:38
When our baby was first born we used to use a blanket swaddle. Then our doula recommended this swaddle and we love it. It is easy to use and our baby sleeps so much better when we swaddle her with it. The material.is nice and stretchy and it's breathable. This is the third one we have purchased and have bought it as gifts for expecting friends.
Shawn Burris
2025-08-10 10:00:03
I really wish I had found the Happiest Baby Sleepea Comforter Swaddle sooner! The design is amazing—it wraps snugly around my baby’s midsection and even comes up between her legs, making it impossible for her to wiggle out of the swaddle. It’s helped her sleep so much better, and I feel so much more confident that she’s secure. This swaddle is a game changer for any parent!
germangf
2025-07-30 18:09:18
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KMason
2025-07-01 16:13:43
Title says it all. We love the organic cotton, it’s super breathable and soft. It holds baby nice and snug, it’s quick and simple.We bought a size mid (our kid is in the weight range) and the fit in the piece that velcros cross the belly is crazy short. Especially if you cloth diaper.
Aimee
2025-05-13 09:26:37
This swaddle is secure but easy to get on and off in the middle of the night. Baby sleeps soundly, it washes well, and serves its purpose like a champ.
Heather Cameron
2025-04-22 18:56:39
This swaddle is undeniably adorable, but it has a design flaw that affected its comfort for my baby. The velcro flap meant to support the baby's bottom sits too high, causing discomfort for her. After cutting it off entirely, though, the swaddle worked perfectly.I appreciate the mesh panels around the legs, which help keep her cool at night—a feature often overlooked in swaddles made from warmer materials. This has alleviated our concerns about her overheating during sleep.The wide arm openings make it easy to maneuver her in and out without any struggle. Overall, it's a good product, but the unnecessary butt flap was a drawback. If you don't mind making a minor modification with scissors, this swaddle could be a great choice for you.
Anne
2025-04-18 14:59:33
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20sbuyer
2025-03-10 15:53:34
I didn’t bother returning and chalked it up to a warehouse mistake, but then the same thing happened to a friend when ordering, so I thought it was odd. Meanwhile, the product itself is great! (Hence five stars for what I think matters.)
Giulia
2025-02-14 11:35:21
Ho utilizzato questo articolo per i primi 2/3 mesi del mio bimbo, prima dormiva solo in braccio ma avvolgendolo con questo sacco potevo metterlo nel suo lettino e lui continuava a dormire senza problemi. Consigliato se il vostro bimbo ama essere fasciato e avvolto.
Die Kernis 👫ðŸ½ðŸ•
2024-12-09 14:24:42
Der Pucksack überzeugt durch sein durchdachtes Design und die hochwertige Verarbeitung aus 100 % Bio-Baumwolle. Der 5-Sekunden-Wickelmechanismus macht das Einwickeln besonders einfach und schnell, was gerade nachts sehr praktisch ist. Entwickelt von Ärzten, unterstützt der Pucksack eine gesunde Hüftentwicklung und verhindert dank sicherem Sitz versehentliches Kratzen des Gesichts. Das sanfte Sternenmuster in Grau ist zudem optisch ansprechend. Ideal für Eltern, die Wert auf Komfort und Sicherheit legen.
Happy customer
2024-11-25 15:22:50
Great sleep swaddle. My little girl hates the love to dream and could escape a wrap swaddle so this is great.
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