Material: Charcoal Fiber Color: Black Set: A Elbow Set, A Knee Set, B Elbow Set, B Knee Set, A Elbow & Knee Set, B Elbow & Knee Set Country of Origin: China Bike Protector is made of charcoal fiber that has good impact resistance and can better reduce the impact of the knees and elbows. The bike knee is made of breathable, breathable velvet material which allows ventilation during exercise and perspiration. Excellent anti-shock performance, built-in EVA foam has elasticity to effectively reduce vibration shock during travel, outdoor sports and climbing. It can be used not only for exercise, but also for daily use. For thicker fabric materials, jogging, walking, joint pain, climbing, exercise, injury, arthritis, and joint pain are equally applicable.