Ueasy Unisex Protective Sponge Knee Pads Collision Avoidance Kneeling Kneepad Comfortable Elastic Durable Impact Resistance Pain Relief for Basketball Football Soccer Running Baseball Paintball Climbing Biking Mountain Bike Cycling Made of high-density foam, latex silk, cotton. One size, suitable for knee perimeter 15"-20.5"(38-52cm). Has good elasticity, breathable fabric keeps skin dry, and more comfortable. Prevent knee injuries during exercise, protect the knee. Keep warm, prevention and reduction of stiff muscles and joints. With high-density strengthen foam, fits for outdoor sports, volleyball players, soccer goalie, knees, dance, hip-hop, rock climbing and so on.