The Trespass Bunka children's sleeping bag in mummy design is a threeseason sleeping bag that has an upper limit of 6C and an extreme 10C. It has a synthetic filling and is therefore easy to clean, dry and maintain, as moisture does not affect its insulating ability, unlike the downfilled alternative.threeseason sleeping bag for temperatures with an upper limit of 6C and extreme 10CSynthetic filling easy to clean and sustainableElastic hood with secret inside pocket with hookandloop fastenerTwoway zipper for multifunctional use with hookandloop closure for added warmthPractical mummy design