

🌙 Snuggle smarter, sleep safer — because your baby deserves the best!
The Unnivoll Baby Sleep Sack is a 100% combed cotton wearable blanket designed for newborns up to 6 months. Featuring a breathable 0.5 tog rating, foldable mitten cuffs, and a convenient 2-way zipper, it ensures safe, comfortable, and easy nighttime care. Certified to meet CPSC safety standards and pre-washed to minimize shrinkage, this sleep sack combines premium quality with practical design for both babies and busy parents.










| ASIN | B0CYPS9WTN |
| Best Sellers Rank | #7,211 in Baby ( See Top 100 in Baby ) #104 in Baby Wearable Blankets #1,007 in Baby Boy's Clothing #1,066 in Baby Girls' Clothing |
| Brand Name | Unnivoll |
| Closure Type | Zipper |
| Collection Name | All |
| Color | Blue Green Constellation |
| Customer Reviews | 4.6 out of 5 stars 399 Reviews |
| Fabric Type | 100% Cotton |
| Fit Type | Regular |
| Global Trade Identification Number | 06976097740140 |
| Manufacturer | Baoding Zhishang Textile Manufacturing Co., Ltd. |
| Material | Cotton |
| Occasion | sleeping |
| Pattern | Solid |
| Product Care Instructions | Machine Wash |
| Size | Small |
| Style | Blue Green Constellation |
| Unit Count | 2 Count |
S**A
Great long sleeve sleep sack
I really love sleepsacks and so does our toddler! I have been looking for longer sleeve ones and these were a great option and I got a really great deal as well! They do not shrink and haven't piled at all and we have had these for a while now. I will say the arms are very long but if you roll the sleeves they typically stay rolled through the night and have never bothered our toddler and she is a thumb sucker. She has always slept very well in these and whenever we put it on she immediately is comfortable and gets in bedtime mode.
M**R
Great Sleep Sack
I ordered these sleeps sacks for my son's sleep study as a two way zipper was required. The quality of these sleep sacks is great with a super soft and comfortable material, lightweight for warmer months, and great zipper quality. The color in person are slightly darker than the pictures shown, however the style is adorable. The sleep sacks have now been worn and washed a few times, and hold up great! Defiantly good value for money.
J**N
Perfect baby wearable blanket
These are great, lightweight sleep sacks! They are perfect for a warmer sleep environment and are easy to change diapers as needed.
K**N
Great sleep sack for babies that run warm.
My daughter loves her sleep sacks, but she runs warm/hot, so I am transitioning her clothing/sheets to as much cotton as possible. The material is a light enough for it to be breathable, yet warm enough to soothe her. It has a double zipper that makes changing her diaper convenient and the mitten cuffs are easy to fold over. I washed it in a delicate cycle and tumble dried it. It was still damp when it was done, but it air dried well when I hung it up for the night and was able to put it on her this morning. Sizing was interesting. She is currently 26" long and ~13lb, putting her in-between the small (0-6 months) and the medium (6-12months). I ordered the medium first, and it was way too big. The small fits her just right and has plenty of room to spare. I would not recommend this for a newborn as it would be way too big. Overall, I think this is worth the price and she seems to be sleeping in it well. If something changes I will update my review.
S**L
Massive
We have a larger kid. He just turned 3 months and he's 16lbs and about 26" long, so he's in the low-end range for the 6-12 medium size so we went with that. It's huge! The sleeves are super long and the width is like twice his width. Don't really want to return it since he will fit eventually, but just for reference sake, take this all in to account. Very soft and well made though. The print is my absolute favorite!
H**S
Great value great material
Super soft comfy plenty of room for their legs
R**I
These are the best!
I bought four of these and use them as sleepwear for my kid. They're soft and warm. They have been washed regularly for two months and haven't faded yet. My son doesn't quite sleep through the night yet but he's starting to realize that this outfit means sleepy time. 0-6 months is a month of growth and I bought these at his 2 month mark. They were big at that point but it gives him room to grow making it worth the money. I'll definitely be buying the next size up once he grows out of these.
R**Y
Perfect!
I loved these sleep sacks. They keep my baby warm and snuggly. She slept so much better at night and they didn't shrink when I washed them!
Trustpilot
2 weeks ago
3 weeks ago