Total Leatt protection score of 20 points, Hard shell and 3DF AirFit ventilated soft impact foam, CE tested and certified as impact protection: Knee EN1621-1, Silicone lamination to keep protector in place, New anti-odor MoistureCool and AirMesh wicking fabrics, Silicone printed and adjustable non-slip cuffs, Soft rubber edges give great protection feel and comfort, 3D design for optimal fit with specific left and right sides. Vented plates for maximum airflow, Weight: 500g (pair). Sizing: S/M Thigh 33-41cm Calf 25-33, L/XL Thigh 51-53cm Calf 33-44cm.