This sleep sack is love! ❤️❤️ It is unbelievably soft and has a little stretch. I love knowing my little guy is super comfy in this. The length is generous, so I know we will get beyond the sizing on the tag. I woukd sleep in this if it came in adult sizes! It also has a second zipper that makes it super easy to complete a diaper change in the middle of the night. I can't say enough about how much we adore this sleep sack!