I got my eight month old size large sleep sack. I have her wear the sleep sack during her day naps. I did notice if she wore heavier clothes she woke up sweating. When she wears it with a onesie, she sleeps much better and longer. The fabric is 100% cotton, easy to wash and has double zippers for easy access for diaper changes. I recommend this product, but not with an additional blanket!

Can't believe we have only invested in the sleep sack since my baby was three months old. We have been using it past seven months. The bottom of the sleep, sack is very spacious, allowing for healthy hip development and Truly is the only sleep sack you will need for initial months of baby!

This sleep sac is incredibly. My daughter loves sleeping in it. Keeps her snuggly and warm.

I love this sleep sack so much! The material is soft and fits my baby well. I can get a good night of sleeping knowing my baby is both warm and safe.

We absolutely love this sleep sack! It's so soft and comfortable for our 10m old. He sleeps great throughout the night in warm and cold weather, when dressed appropriately under. Highly recommend!

This sleepsack will last us for months because of the length. This is also a good sack for all thro the year and all seasons.

I love how cute this sleepsack is and that it is so functional and grows with baby. You can swaddle the arms with the inside velcro, and transition to arms out when baby is ready. I love that it leaves a lot of room around the hips to allow for maximum growth and movement.

This sleep sack is so soft and light weight. It looks large when you take it out of the box but I love that there is extra room for my little one to move around. The zipper is smooth and goes up and down easily. It feels very comfy to wear to bed and keep my little one warm at night on the cooler nights. I would definitely recommend for someone looking for a light weight blanket for baby that also keeps them safe. I bought the 6-12 months and fits my 7 month old perfect!

We absolutely love this! It's so soft and large enough to grow into for a long time! The double zipper makes it so easy to unzip without removing for diaper changes! Now that my son is rolling it's so nice to be able to have the swaddle feel without having to wrap his arms.

This sleep sack is so soft, easy zip, lightweight and snug on my baby so she feels secure. It is the only sleep sack she wants to wear at night and stays asleep. I highly recommend this to every parent looking for the perfect sleep sack. There is lots of room for her to grow as well!