The Sleep Onesie is a TOG-rated sleeping bag 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, sleep walkers, kids who kick off their blankets, or little starfish who don't like the restriction of a sleeping bag. The Sleep Onesie is made from and filled with GOTS certified organic cotton that is non-toxic and gentle on irritable skin. The strethcy material allows your little one to move freely and stay comfortable for sleep. The 3-way zip confirguration is helpful for overnight nappy changes or toilet trips, and foot cuffs add extra warmth for little toes. The 2.5 TOG Sleep Onesie will keep kids warm during sleep in room temperatures of 17-23°C / 63-73°F.