3D design, sewn specially at the knees of pants for more comfort when riding. Perfect for riding, cycling and cross country race etc. Made of polyester and spandex, soft and breathable. Reflective strip at the chest and back of jacket to ensure night riding safety. Zipper with mesh cloth inside design at the both side of jacket for breathability when riding. Silicone hem at the jacket ends designed for skid resistance. 3 pockets at the back, easy to carry your small articles. NOTICE: Size is Asian size that runs smaller than US standard,please check the size chart for this bike jersey set .We recommend one size larger to buy, that means if you wear US L please choose Asian XL.