The baby wearable sleeping bag is made from two layers of lightweight materials which are filled with cotton, it is exceptionally breathable to reduce overheating and ensure comfortable sleep for babies Inverted zipper opens from the bottom, which makes diaper changing and taking on or off easily This design allows room for kicking but cannot be kicked off – So baby will stay warm and safe all night long. Prevents baby’s legs from getting caught between crib slats The sleeveless design will reduce the risks of overheating – replacing loose blankets in the crib for a safer environment Machine wash cold. Tumble dry low. Do not bleach. No need to hand wash. Save your time and energy.