The lightweight DeFender XC11 fender provides optimum protection specifically for 29 "mountain bikes. Due to the secure mounting mechanism, the fender can be attached in seconds to any round seatpost with 25.4 - 34.9 mm diameter. In addition, it can be adjusted twice in the angle for optimal tire coverage. For optimum protection and long durability, the stiff fiberglass composite body of the DeFender XC11 is supplemented with more flexible material. The polished underside effectively prevents dirt adhesion. Fits mountain bikes up to 29" x 2.5".