100% Cotton Zipper closure 85% Cotton/15% Polyester Velvet on shell,100% Cotton Knitted Fabric Inside with 100% Polyester Filling, 3.5 TOG is designed for winter when temperatures in your child??s room between 14??C ?C 21??C (57??F ?C 69??F). Super Soft when Touching Shell Fabric, Comfortalbe and soft in Natural cotton inside. Pink and Blue available in two size: M: Baby between 30-36??12-24 Months; L: Baby between 35-43??2T-4T SPECIAL DESIGN:Movable Long sleeve, parents could add or remove the sleeve as Baby??s needs.Legs Open design-perfect for moblie child or todder,2 way zipper design:it will be very easy to change diapper for baby SAFTY Comply With BS EN 16781; The zipper’s internal protective sheet can prevent the baby from being pulled, and will not rub baby’s skin, super soft and safe for baby. OUR PACKAGE AND SERVICE??Package: You will receive 1 pack BloomStar sleep bag; We Promise 31-day Money Back Guarantee, if you have any question about the product, please do not hesitate to ask questions.