Professional mesh fabric: 100% polyester fabric. ---------------------------------------------------------------------------------------------------------------- Jersey Top/Upper Upper jersey adopts mesh fabric which has lots of holes, features breathable and moisture wicking, keep your body cool and fresh always. 100% polyester fabric is of good elasticity, lightweight and soft, fits to your body perfect Bottom Shorts/Bibshorts The lower hem of jerseys and the leg opening of shorts with gripper, which prevents the cloth from slipping.3 Gear Pockets in the back of jersey. It's convenient for you to carry your personal stuffs.Lycra fabric of shorts. Shorts are made of Lycra fabric with 20D Gel Pad, which is of strong elasticity and makes you feel comfortable.