








🌟 Sleep smarter, parent happier — the #1 swaddle that’s redefining baby sleep!
The Happiest Baby SNOO Organic Cotton Sleep Sack (Medium) is a top-rated, pediatrician-designed swaddle that combines organic, breathable fabric with innovative safety features. It securely attaches to the SNOO Smart Sleeper, promotes longer, more restful sleep by preventing startles, and supports healthy hip development. With its escape-proof fasteners and convenient two-way zipper, it’s the ultimate sleep solution for modern parents seeking peace of mind and superior comfort.

| Additional Features | Breathable |
| Age Range Description | Baby |
| Asin | B08XZYZ3FP |
| Best Sellers Rank | #10,140 in Baby (See Top 100 in Baby) #208 in Baby Wearable Blankets |
| Blanket Form | Swaddle |
| Brand Name | Happiest Baby |
| Color | Graphite Stars |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,929) 4.6 out of 5 stars |
| Fabric Type | Organic Cotton |
| Fabric Warmth Description | Lightweight |
| Fill Material | Cotton |
| Item Dimensions L X W | 9.75"L x 8"W |
| Item Type Name | Baby Sleep Sack |
| Manufacturer | Happiest Baby |
| Material Type | Cotton |
| Model Name | SNOO |
| Model Number | 5221SNSS104 |
| Number Of Items | 1 |
| Pattern | Stars |
| Product Care Instructions | Machine Wash |
| Recommended User Type | baby |
| Seasons | Winter |
| Size | Medium |
| Style Name | Modern |
| Theme | Stars |
| Unit Count | 1 Count |
| Upc | 817720022768 |
User
5 week old baby sleeps happily in his Snoo sacks!
I purchased the Snoo Sleep Sack in the Teal Planets color in size small and I have been very happy with it for my 5 week old. The fabric on this version feels noticeably softer and stretchier than the plain white Snoo sacks that I also own. My baby is over 9 pounds and 22 inches long and the Small is still fitting him well while allowing him to sleep comfortably. It's so easy to swaddle him with the velcro and zip up closure.It does a great job regulating temperature. Even during winter we do not need to layer him heavily and he sleeps very well in this sleep sack. He always seems comfortable wearing it and despite being only 5 weeks he is starting to have long sleep stretches! I definitely think part of this is because of how cozy he feels in his Snoo sacks! I would definitely purchase more of these and would choose this fabric over the plain white versions due to how soft and flexible it feels.
User
The softest Snoo sack yet and the Tie Dye is adorable!
We own a few different Snoo sacks, but this Tie Dye Rainbow version is by far my favorite. The 100% organic cotton feels noticeably softer and higher quality than the standard white ones.Why we love it:• Design: The tie-dye print is super cute in person vibrant but still gentle enough for a nursery.• Softness: It washed really well and stayed incredibly soft against my baby's skin.• Function: It works exactly like the original sacks (clips in easily), but adds a nice pop of color to the bassinet.Verdict:If you want to mix up the plain white look, this is a winner. Highly recommend for the softness alone!
User
Well made, good color to see leaks
You can’t use the snoo without them so I give it 5 stars. I do like the double zipper, the mesh to air out the swaddle and the material is think and durable. The gray is a great color bc then you can see if the swaddle is wet from a diaper leak or a spit up.
User
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.
User
Good buy
Very good quality and actually bigger than older model
User
Made nighttime routines easier for a new parent
This was a great purchase, especially for my husband who was not very confident with traditional swaddling. Getting a baby wrapped securely can be challenging, especially during those late-night feedings when everyone is tired, and this sleep sack made the process much easier.I really liked that it helped our baby feel secure and comfortably wrapped without having to struggle with getting a perfect swaddle every time. It was simple to use, which made those middle-of-the-night changes and feedings much less stressful.The material also felt breathable and comfortable. I felt better knowing our baby was cozy without feeling overly warm. The design made it easy to put on and take off while still keeping the snug feeling babies often like when sleeping.Overall, this was a great addition to our baby essentials. It is especially helpful for parents who may not feel confident with traditional swaddling or just want something quick, easy, and reliable for bedtime.
User
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.
User
Overall nice but not the same quality
I bought this as a back up for the swaddle that came with our Snoo rental. The positives are that it’s held up with multiple washes without shrinking and I really like the two way zipper (so I can sneak the owlet sock on). The downside is that I noticed the Velcro part has pilling on it which didn’t happen with the swaddle I got from the company. I did get this swaddle on sale on Amazon and have seen it happen occasionally where it’s around $25 so I would definitely wait for that.
User
Recommend
A great sleep suit. Secure and cool for the summer months.
User
Very good
My baby has started sleeping through the whole night because of this swaddle and it’s so comfortable.
User
Muy buena compra!
!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.
User
Genuine sleep sack, my baby loves it with the Snoo
Nice and soft sleep sack which fits my 2 month old (big baby). It’s a snug fit but thanks for it being stretchy it isn’t restrictive (any more than it should be). Washes and tumble dries well - just make sure to fasten the inner bands together beforehand otherwise the Velcro sticks to everything! A nice range of colours from the manufacture, although I find this design is one of the most available ones to buy.
User
Mit ABSTAND der beste Schlafsack / Pucksack !!!!
Ich bin so so so begeistert !!!! Ich hab alles an pucktüchern, Schlafsack, von anderen Anbietern gekauft und probiert. Alles war zu groß, unsicher, hat geruscht. Bei diesen Sommer temperaturen is mein Sohn auch super schnell zu heiß. Ich war echt verunsichert nochmal was zu bestellen, aber ich hab’s gewagt und dieser Schlafsack ist absolut perfekt. Er sitzt wie angegossen ( Baby 1 Monat alt) ist atmungsaktiv, luftig, es rauscht nichts, er kann sich nicht befreien. Ich bin wirklich sooo happy und hoffe das die schlaflosen Nächte bald besser werden. Unbedingt den hier holen bin wirklich so begeistert !!
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