Mavic's new Ksyrium collection includes some winter gear designed to appeal to the tech nerds among us, and the Ksyrium Leg Warmers are far from the most complicated pieces. They are efficient and effective, though, and do the job without fuss or discomfort, which is all you can ask. Made of wind blocking Warm Power fabric, with a soft brushed lining for extra warmth, the Ksyrium Leg Warmers keep your engine moving freely during chilly rides. They also slide on easily and stay in place courtesy of an elastic cuff with a silicone gripper print. The warmers are finished with reflective details to help keep you visible in low light conditions.