For anyone riding during the winter months a rear mudguard is a must to prevent spray and keep you clean and dry. The Defender M2 rear mudguard is suitable for MTB or road bikes as it easily adjusts to 25.4 to 34.9mm, easily fitting standard and oversized seat posts. The two-pivot arm articulates for improved tire coverage and perfect bike fit. Made from a stiff engineering grade plastic support frame that is comolded to a softer more flexible material at the trailing edge for greater durability. A highly polished underside helps prevent dirt buildup and aids in cleaning.