About the Endura SingleTrack Lite Knee Protector II Design PhilosophyThe SingleTrack Lite Knee Protector is a true all day riding protector with a barely there, unrestricted feel. Ride-Friendly Protection The flexible PU foam protective insert moves with your body enabling unrestricted movement and light side knee padding has been included to prevent small knocks becoming bruises. Key Features > Super lightweight, flexible construction for all day comfort > Lightweight Lycra® sleeve with high wicking, breathable mesh backing > Highly abrasion resistant impact panels > Multi density perforated PU foam insert for lightweight, high impact resistance > Side padding provides additional knee protection > Elastic jacquard cuff with silicone gripper provides secure comfort > \\\"barely there\\\" knee protection