You want that knee protection, but you don't want to sacrifice mobility and pedal efficiency to do it. The Enduro Pro Knee Guards are designed to deliver maximum 'hard knock' protection while keeping the bulkiness to a minimum. Slip them on and they'll stay right where you put them thanks to the rear elastic strap and silicon grip. FEATURES: Designed to offer maximum protection while minimizing bulk and weight Moisture wicking micro-Lycra sleeve with nylon mesh rear panel for increased air flow Custom molded D3O knee inserts designed by and exclusive to Fox Slip on design for reduced bulk Rear elastic strap and silicon grip top and bottom to hold the guard in place D3O knee inserts are removable for convenient and quick washing Knee inserts are EN1621-1 Level 1 Note: No technology or product can fully prevent the risk of injury or death