The Rapha Pro Team Leg Warmers put a windproof, water-resistant fabric on the front of the leg where weather actually hits, and a brushed fleece panel behind the knee where comfort and bend matter most. Silicon grippers at the top hold the warmers exactly in place, and seam placement keeps panel joints away from the knee's high-motion areas during every pedal stroke. Reflective logos add visibility once the light starts to fade. What Our Gearhead(R) Experts Are Saying:"These stay exactly where I put them for a full ride, no slipping, no bunching behind the knee no matter how many hours I'm out. I never feel a seam catching as my knee bends through thousands of pedal strokes."