six six one Rage Hard Knee Guard (Black, Large) SIDE IMPACT PROTECTION WITH EVA FOAM PADDING VENTILATION THROUGH PERFORATED NEOPRENE/MESH CONSTRUCTION SUPERIOR FIT WITH PRE-CURVED CHASSIS STAYS IN PLACE WITH VELCRO CLOSURES 50% NEOPRENE, 15% KEVLAR, 15% EVA, 15% NYLON, 5% PLASTIC