This wearable blanket encourages safe back sleeping in cribs helps your baby move towards independent sleep and fosters healthy sleep habits for optimal growth and development giving parents peace of mind as their baby transitions from swaddling. This baby sleep sack is made with cotton fabric and this hypoallergenic and breathable fabric helps regulate your baby body temperature wicking away sweat to keep your baby comfortable and dry. We prioritize your baby safety with the baby sleeping bag neckline to help keep fabric away from baby face and a zipper protector shields your baby face from scratching and the two way side zipper design makes it a breeze for quick in and out and diaper changes. The sleep sack is thick enough but not bulky just the right amount of thickness to keep kids warm not overly hot but comfy like a gentle roomy cocoon. Crafted from high quality cotton this product ensures the sleeping bag is durable soft wash resistant and maintains its loftiness over time and it can be cold machine washed in a gentle cycle.