The Dreamy dots Cozy nest encases your tiny one - creating a familiar environment that ensures a feeling of comfort and security when transitioning from mummy's tummy to sleeping on their own. The Cozy nest is perfect for sleep, rest, play and tummy time The sides and foam mattress provides great stability and comfort. Through hidden YKK zippers side-filling and mattress are quickly removed, making it easy to wash the cover, filling or mattress separately if needed. The Cozy nest is designed with great care for tiny ones, choosing high quality materials and providing the best sleeping comfort and safety. The Done by Deer Cozy nests are breathable and air permeable.