Baby Sleep Sack 6-12 Months 3 Pack 100% Cotton Lightweight 0.5 TOG Wearable Blanket Baby Sleep Bag with 2-Way Zipper for Newborn Infant Blue

We use a short or long sleeve onesie under these depending on temp and to keep the zipper from rubbing against the belly. These are soft, not too thick or thin in my opinion and pair well with onesies. They wash well and retain shape, have had no issues with zippers. I have bought multiple sizes, always good results. They also zip from each side, which is great for diapers changes, just unzip the bottom portion.

I absolutely love these! They are so great and light in the warmer months, but keep baby nice and cozy. I don’t have to worry about my daughter overheating, and love all of the options and colors. My daughter has been using these from 6-12 months and now I bought more for 12-18 months. I am not comfortable with giving her a blanket, so this is a safe way to keep her warm at night! Highly recommend.

I ordered the Unnivoll sleep sack in the 6–12 month size and was pleasantly surprised by how light it feels while still maintaining a secure fit. The fabric is pure combed cotton and noticeably soft against the baby’s skin. I was reassured to learn it has a 0.5 TOG rating, making it ideal for room temperatures around 75–80°F and summer nights. The two‑way zipper is a game‑changer during diaper changes. I was able to access without fully unwrapping the sleep sack and waking up the baby. A zipper guard at the top effectively prevents scratching the chin or neck. I also appreciate that the fabric is pre‑washed and shrinks very little even after repeated washes at low heat. The design is roomy around the hips to support healthy movement while still keeping the upper body snug. My baby seemed more comfortable and slept more soundly compared to swaddle blankets. After weeks of use, the sleep sack looks almost as crisp as day one and remains breathable even on hot evenings.

Super cute, warm, and well made. The cotton lining is soft and good for temperature regulation. My 2 month old fits into the 0-6 month size with room to grow, I don't think it would be suitable for a newborn though, way too big.

These are not only adorable patterns but lightweight and breathable which is perfect for the warmer summer nights. They fit my little man perfectly, and he seems to like them and sleeps very comfortably in them. I absolutely love the double zipper so if I need to change him at night I don't have to completely unzip him. Another feature I love as well is that it zips from bottom to top so I don't ever have to try to get the zipper started and have to try getting it to hook with my squirmy little guy who's always trying to get away and be on the move (moms I'm sure you know what I mean). I would definitely recommend and purchase again

Size is great. Fabric is thin but is soft and the zippers seem to be good quality. Purchased as a baby gift for Christmas.

Great sleep sack. Very warm, great quality and thickness. It dkes run small. I would recommend getting a suze larger as it did shrink. Also, it does take a while to dry. We had to dry twice, turning it inside out the second time. I would still recommend this to others.

My baby only likes to sleep on some kind of sleep sack. He has outgrown his Halo and it is summer time. So I ordered these lighter weight ones to try. The material is lightweight like a T-shirt material. They are very easy to use and convenient for late night diaper changes since they have double zippers. They are a must have if your baby is like mine. They come in a variety of sizes so you can find the right size. They aren't super stretchy, but are like a T-shirt. They work well and function just as I was anticipating. I am so thankful I came across them and bought them.