The innovative SWADDLE UP SILKY-LUX™ with patented wings, allows babies to sleep in a more natural position, with their ARMS UP™, so they can self-soothe, by sucking their hands and by touching their face. Medical research has shown that when babies can self-soothe, they sleep longer. The SWADDLE UP™ is intended for use from day one™ and can help parents establish a solid foundation for sleep, starting from birth. The SWADDLE UP SILKY-LUX™ 1.0 TOG is made from luxuriously soft and ultra-breathable bamboo viscose. Natural temperature regulating 1.0 TOG fabric is ideal for moderate temperatures. Features: -Luxuriously soft and ultra-breathable 1.0 TOG bamboo viscose is ideal for moderate temperatures -Ideal for ambient temperatures between 68°F and 75°F / 20-24°C -Natural temperature regulation -Unique patented wings allow a natural ARMS UP™ position -ARMS UP™ allows true SELF-SOOTHING™ = more sleep -A single layer of fabric to reduce the risk of overheating -Certified "hip healthy" by the International Hip Dysplasia Institute provides recommended flexion for the hips and legs -Double zipper for easy diaper changes -No loose diapers to peel off or undo while sleeping -Swaddle in seconds without rashes -Slim fit for a feeling of security, warmth and comfort -Proudly supporting First Candle and SIDS research -Easy care: machine wash delicate, tumble dry low