Axiom's Roadrunner LX Reflex 29er Fenders offer excellent protection from the rain and are made of super-durable Techniflex plastic that resists breakage even in sub-freezing conditions. There are mud flaps on the bottom of both fenders for additional protection for you and your riding buddies. And these fenders help keep you safe with gray-by-day, reflective-by-night 3M Reflex stripes down the center. These fine fenders also feature rustproof stainless-steel stays.