The Sleep Onesie is a TOG-rated sleep sack alternative, designed to be worn on its own during sleep or with a Layer/PJs underneath for warmth and comfort. These are the perfect option for toddlers or preschoolers transitioning into a big bed, sleepwalkers, kids who kick off their blankets, or little starfish who don't like the restriction of a sleep sack. The Sleep Onesie is made from and filled with GOTS certified organic cotton that is non-toxic and gentle on irritable skin. The stretchy material allows your little one to move freely and stay comfortable for sleep. The 3-way zip configuration is helpful for overnight diaper changes or toilet trips, and foot cuffs add extra warmth for little toes.