Diamond Talk Military Army Tactical Combat Knee & Elbow Protective Pads Skate Knee Pad for Outdoor Sports Tactical Combat Hunting CS Paintball Game Skate & Skateboarding Protective Pads,(ACU) Flexible yet very strong polymer CUP act as shield from impact Unique X-shaped thermal plastic urethane (TPU) shell EVA high-density foam for superior shock absorption Lightweight TPU and Cordura nylon construction Shaped design hard rubber cap for maximum mobility and protection with a comfortable fit. Adjustable velcro strap fits for various sizes.