Happiest Baby SNOO Sleep Sack - 100% Organic Cotton Baby Swaddle Blanket - Doctor Designed Promotes Healthy Hip Development (Charcoal Planets, Medium)
Condition: New
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Availability:
19 left in stock
Arrives
Friday, Oct 30
At a glance
- Condition
- New
- Color
- Charcoal Planets
- Size
- Medium
- Model
- 5221SNSS125
- Special Feature
- Breathable
- Style
- Modern
- Blanket Form
- Swaddle
Features 5
- #1 Swaddle New York Times: Rated Americas best baby swaddle, our SNOO Sleep Sack was designed by top pediatrician and worlds 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.
Specs 27
| Material | 95% Organic Cotton, 5% Elastane and Shell 2 100% Polyester |
|---|---|
| Color | Charcoal Planets |
| Brand | Happiest Baby |
| Special Feature | Breathable |
| Style | Modern |
| Style Name | Modern |
| Blanket Form | Swaddle |
| Theme | Planets |
| Pattern | Planets |
| Additional Features | Breathable |
| Recommended Uses For Product | Napping |
| Seasons | All |
| Fabric Warmth Description | Lightweight |
| Material Type | 95% Organic Cotton, 5% Elastane and Shell 2 100% Polyester |
| Fill Material | Cotton |
| Product Care Instructions | Machine Wash |
| Fabric Type | 95% Organic Cotton, 5% Elastane and Shell 2 100% Polyester |
| Brand Name | Happiest Baby |
| Age Range Description | Baby |
| Number of Items | 1 |
| UPC | 817720023451 |
| Manufacturer | Happiest Baby |
| Model Number | 5221SNSS125 |
| Item Type Name | Baby Sleep Sack |
| Item Dimensions L x W | 23.2"L x 13"W |
| Size | Medium |
| Unit Count | 1.0 Count |
No specs match.
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Friday, Oct 30
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
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!
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Reviewed in the United States on January 28, 2026 by Practical Dad
must buy
Color: Ivory Planets
Size: Medium
The Happiest Baby SNOO Sleep Sack is excellent quality. The 100% organic cotton is soft, breathable, and gentle on baby’s skin. The design makes swaddling easy and secure, helping baby feel calm and comfortable. It’s well made, washes well, and holds up beautifully over time. A great investment for better sleep and peace of mind.
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Reviewed in the United States on December 19, 2025 by Anna Derderian
Perfect swaddle
Color: Graphite Stars
Size: Small
Can’t live without!! The ONLY swaddle our baby can’t escape! Extremely easy to use. Color exactly as pictured. Has lasted for several months, does start to lose velcro stick after about a month or 2 but the zipper keeps it secured. Not super warm, perfect for 70° sleeping temps!
Reviewed in the United States on December 30, 2025 by william
Cute Print that washes well
The print on this is so cute! It did start to fade after several washes, but the design actually looks cute faded, almost like it was always that way. We love the overall quality of the Happiest Baby brand and have never had issues with the Velcro or clips
Reviewed in the United States on February 18, 2026 by Tori
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.
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Reviewed in the United States on May 30, 2025 by Danielle Cloutier
Consider sizing up
Color: Graphite Planets
Size: Medium
Purchased for use with our Snoo - easy to use, good quality. I did feel like they run on the smaller size - our little one isn’t huge by any means but his arms always felt like they were crammed in when we’d zip him up at night - ended up sizing up for comfort.
Reviewed in the United States on February 15, 2026 by Megan Richards
Finally, the Swaddle That Makes Bedtime Easy
Color: Ivory Lemons
Size: X-Large
Hello all, We absolutely love the Happiest Baby SNOO Sleep Sack! My wife has tried multiple other brands before, but this one truly made her day. The 100% organic cotton feels so soft and gentle on our baby’s skin, and we love that it’s doctor-designed to promote healthy hip development. The ivory lemons design is adorable, and the X-Large size gives our little one plenty of room to grow comfortably. It’s made bedtime so much easier and more peaceful for both baby and parents. Highly recommend to any new parent looking for a safe and cozy swaddle!
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Reviewed in the United States on January 22, 2026 by Sharifi
Great product, bad smell
Color: White
Size: X-Large
Works fine. Fits the snoo, but had a bad “packaging” smell when it arrived. Had to wash it twice.
Reviewed in the United States on November 28, 2025 by Grace