The cozy sleeping bags are made from very soft organic cotton interlock jersey; baby will be able to wiggle or kick while dreaming, without ever feeling cramped. It is an essential accessory for newborns and the absolute guarantee of a wonderful night's sleep. Thanks to its full zipper, you can easily take baby out for the evening cuddle or a quick diaper change. Composition: Interlock, 100% organic cotton 2 TOG (Thermal Capacity) ideal for an ambient temperature between 63-68°F / 17-20°C