Our best selling arm warmers combine the exceptional warmth and comfort of thermal fleece fabric with advanced anatomic shaping a wide plush gripper holds them in place with less pressure so they stay comfortable and secure on long rideselite thermal fleece panels provides superior warmth stretch and recoveryanatomic left and right arm specific fitplush wide elastic binding with silicone gripper for a stay up fitreflective elements for low light visibilityfabrics 6 nylon 30 polyester 14 ela