Fox Racing Launch Pro MTB Knee/Shin Guard SIZING INFO - Runs large, sizing down is recommended. Available in sizes S/M (Thigh 14.5"-16" Calf 13.5"-15") and L/XL (Thigh 16"-17.5" Calf 15"-16.5"). Silicone gripper behind the knee to keep the pad in place Perforated neoprene for breathability Pre-curved ergonomic fit Elastic strapping top and bottom to keep the pad in place