Happiest Baby SNOO Sleep Sack – 100% Organic Cotton Baby Swaddle Blanket – Doctor Designed Promotes Healthy Hip Development (Midnight Planets, Small)
$34.95





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We develop science-based products, content and services to enhance child well-being and to help solve everyday parenting challenges. Dr. Karp’s landmark theories guide parents to understand and nurture their infants and toddlers and relieve many stressful issues, like new-parent exhaustion, infant crying and toddler tantrums. His groundbreaking 5 S’s method is standard pediatric practice for soothing fussy babies in 20+ nations!
What makes our products unique?
Designed by a world-renowned pediatrician, we created a suite of smart solutions using science and technology.
Why do we love what we do?
We help all parents raise happy and healthy children while also getting the rest they need.
What problem are we solving?
Modern parents often have little experience and little hands-on help from friends and family. That is a problem because exhaustion and the stress of parenting can trigger a host of serious issues, including marital conflict, breastfeeding failure, accidents, obesity, postpartum depression/anxiety and more.
“#1 Swaddle” New York Times: Rated America’s best baby swaddle, our SNOO Sleep Sack was designed by top pediatrician and world’s leading hip-safe swaddling expert, Dr. Harvey Karp. Perfect for healthy, growing hips (International Hip Dysplasia Institute seal of approval).
100% Organic Cotton: Made from luxuriously soft organic cotton with special wings that attach to our SNOO Smart Sleeper to keep babies safely on the back. Includes extra-quiet Velcro for escape-proof security and 2-way zipper that opens from top or bottom for easy midnight nappy changes.
More Infant Sleep: Our baby swaddle sleep sack prevents startles and boosts babies’ sleep quality with special inner flaps that give the snug embrace your baby boy or girl loved in the womb. Arm openings can unsnap to allow for arms out. Great transitional swaddle for moving to crib with arms free independent sleep training.
“5-Second Baby Swaddle”: The Happiest Baby Swaddle is the easiest, safest, fastest, escape-proof baby swaddle wrap. It promotes self-soothing and keeps babies sleeping longer than other swaddles.
Prevents Overheating: Breathable mesh at shoulders and legs of baby warp reduce risky overheating. More secure and comfortable than other swaddlers, blankets, or baby sleepers.

A7T3C –
Love This Swaddle—Instant Sleep & Adorable Design!
I am so happy with the Baby SNOO Sleep Sack! From the very first use, it made a huge difference in how quickly our baby falls asleep—almost instantly after being swaddled. I’ve used it ever since my daughter was brought home from the hospital.The quality is outstanding. The 100% organic cotton is soft, breathable, and feels so gentle against baby’s skin. I really appreciate how well it’s made—it gives me peace of mind knowing our little one is safe and comfortable through the night.Love the strawberry design it’s just the cutest thing ever!
Kristin Flynn –
Amazing swaddle!
My daughter will only go to sleep with this on and it is amazing quality and the mesh allows her skin to breathe
Hannah M. –
Even better than the old model!
At first I disliked these and favored the older ones that didn’t have the in between the leg Velcro but I’ve come around on them! I like that they encourage the legs to frog out for proper hip development – it also seems to help tall babies stay in the snoo longer.Two small cons: I like to put a heating pad in the snoo to preheat it before bedtime. The Velcro on the tail piece is sticking up so it always attaches to the heating pad. Not a huge deal but hard to detach one handed when i’m juggling a sleeping baby.The second con is I have found that these take a while to dry in the dryer. I usually have to put them in for 30-45 mins extra. The back band that secures the sack to the snoo is the culprit here.Pros definitely outweigh the cons tho! Great product.
Danielle Cloutier –
Easy, Secure, Cute, and Baby Approved !
This swaddle is way better than the standard white one that came with our Snoo. The material feels softer and sturdier, and my baby clearly prefers it — he settles faster and sleeps more soundly in this one. The zipper is smooth, it’s easy to wash, and it holds up great. Definitely worth getting as a backup or upgrade to the original. Sizing runs true, so if your baby is on the longer side, you might want to move up to the next size sooner than expected.Overall, this swaddle is a total win in our house. It keeps our baby safe, soothed, and snuggled — and that means a lot more sleep for us too.
A.M.A –
Exactly what should be
Works like it should! Easy to use, fit baby well
Lora –
Easy, comfortable, excellent quality
Very easy to wrap the baby, sleeps well when other swaddles failed. Easy to manage on a sleep-deprived mind!I used without the snoo and just let the side straps hang off or you could cut them off if they bother you. Best swaddle I’ve used.
Kayla –
Definitely worth buying
My baby loves it and sleeps for about 7 hours straight in this!
Grace –
Great product, bad smell
Works fine. Fits the snoo, but had a bad “packaging” smell when it arrived. Had to wash it twice.
Hassan Faour –
I’ve been using the snoo for about 4 months now. We had received some old swaddles where there wasn’t enough room around the hips to allow for my babies legs to be in frog position while he slept, so i decided to purchase the newer version and they’re amazing. There is so much room for him to be comfortable. The velcro is sturdy and snug. The sizing is accurate. The buttons around the shoulders allow you to use it as a sleep sack once your baby isn’t being swaddled anymore.Cleaning is a breeze, very easy to get stains out of it even though it’s light in color.The only disappointing thing was that the color was more beige/yellowish than white.We also had to wash it a couple of time once we received it as it was hard to get that factory smell out of it.
bouakel sofiane –
My baby has started sleeping through the whole night because of this swaddle and it’s so comfortable.
Roxana –
C’est parfait pour la naissance, mon fils arrêtait pas de sursauter et de taper les parroi du berceau avec ses petits doigts. Avec cette gigoteuse il est bien serré, il dort beaucoup mieux.Je recommande mais attention c’est vraiment petit, ne pas s’attendre à l’utiliser trop longtemps.
Yess –
!La verdad me gusto mucho este producto! Va creciendo junto a tu bebé, aunque considero que debería de haber tamaños más grandes, mi bebé solo lo pudo usar 1 mes (de 4-5 meses), compre el grande, y aunque no pesa ni los 8 kilos de lo largo le dejo de quedar.
Ashti Salih –
Sehr gut