85% polyester+15% spandex.The fabric consists of three layers that keep you warm and dry. The top layer on the exterior is a rugged windbreaker surface that beads up moisture and prevents stains. The second layer is a waterproof breathable membrane film,and the third layer is a nice soft warm fleece. | Drop tail and elastic hem provide a precise on-bike fit,keep you warm in winter,Reflective elements on front and back add contrast to enhance nighttime visibility | Two pockets for storage inclde one front zipper pocket,Longer cuff design for extra coverage of your wrist,keeps the cold air away from you. | Stretch inserts for optimum fit,mobility, and air circulation(this part no windproof and waterproof). | Please read our size chart carefully before order,for this jacket many customers said the size runs small,so now we changed our size and disign,more close to US size,but maybe still runs a litte small.