Cozy and Sound Sleep: Crafted with care from premium bamboo fibers, this sleep sack offers softness, breathability and temperature regulation. Say goodbye to overheating or sweating，our bamboo fabric keeps your baby cozy and dry all night long, promoting peaceful sleep for your little one.Give parents peace of mind Sustainable Comfort: Embrace eco-consciousness with our renewable bamboo fibers, offering both sustainability and absorbency to keep your baby dry and comfortable throughout the night Effortless Convenience: Simplify nighttime routines with our double zipper design, allowing for quick and easy diaper changes. The top zipper cover ensures added safety, providing convenience with security Free and Cozy Movement: Our bamboo sleep sack with Feet allows your baby to move freely while ensuring warmth and comfort throughout the night. With its unique foot design, your little one can explore, kick, and wiggle to their heart's content without feeling constrained FIT for 12M-7T: Sleep sack with legs has 4 sizes, suitable for sleep sack 12-18 months, sleep sack 18-24 months, sleep sack 2t, sleep sack 3t, sleep sack 3t-5t, sleep sack 5t-7t. All sizes 12m-7t are available to support your toddler's growth. Machine washable Sleep sack with legs has 4 sizes, suitable for sleep sack 12-18 months, sleep sack 18-24 months, sleep sack 2t, sleep sack 3t, sleep sack 3t-5t, sleep sack 5t-7t. All sizes 12m-7t are available to support your toddler's growth. Machine washable.