







🌙 Sleep smarter, parent easier — the baby sleep sack that’s a game changer!
The Unnivoll Baby Sleep Sack (18-24 months) is a 100% combed cotton wearable blanket designed for breathable comfort and safety. Featuring a CPSC-certified design with a protective zipper guard and foldable mitten cuffs, it ensures a secure, soothing sleep environment. The 2-way zipper enables quick diaper changes, while pre-washing technology minimizes shrinkage, making it durable and easy to care for. Perfect for warmer nursery temps (0.5 tog), this 2-pack combines premium quality with practical features tailored for modern parents.










| ASIN | B0CYPV92Y6 |
| Best Sellers Rank | #6,601 in Baby ( See Top 100 in Baby ) #111 in Baby Wearable Blankets #1,009 in Baby Boy's Clothing #1,040 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 382 Reviews |
| Fabric Type | 100% Cotton |
| Fit Type | Regular |
| Global Trade Identification Number | 06976097740027 |
| Manufacturer | Baoding Zhishang Textile Manufacturing Co., Ltd. |
| Material | Cotton |
| Occasion | sleep |
| Pattern | Graphic |
| Product Care Instructions | Machine Wash |
| Size | X-Large |
| Style | Blue Green Constellation |
| Unit Count | 2 Count |
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.
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.
N**Z
Sleep sack with sleeves LOVE!
Cute print and well made cotton outfit. I love the long sleeves and mitten hands! Material is soft and a good weight to be warm without being too much bulk. Washes easily and the zipper makes diaper changes hassle free. Runs big but that’s ok will get lots of use out of it.
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!
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.
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.
J**A
Nice sleep sack for your bundle of joy 😊
Great product when we started to transition our baby out of the swaddle. These were well made and we kept sticking to this brand. We never had any issues with the zipper or stitching and the thickness was exactly what we needed. Our baby got hot easily so we appreciated not having something bulky and thick, as we provided plenty of layers to keep him warm. They held up good after washing multiple times.
T**R
Comfortable
We love these for our son. He’s 9 months now and they fit him comfortably, however we needed something a little heavier for him or he’d wake at night
Trustpilot
3 days ago
2 months ago