The Troy Lee Designs Stage Knee Guard offers mid-range protection for heading out to the bike park in confidence. D30 ® is used for impact protection. It D30 ® is a soft and flexible guard that is comfortable while riding, but hardens on impact to disperse enegery and keep you protected. Packable trail protection Fitlock compression calve Slide resistant exterior kneecap Breathable and wicking chassis Articulated for optimal pedalling Mesh rear panel for ventilation Honeycomb silicone leg gripper CE EN1621-1 certified D30 impact pad