Reduce stress on your knees and prevent injuries. Features a wave-shaped non-slip design on the inside to prevent slippage. Excellent elasticity, fits snugly against the skin, and makes bending and straightening your knees easier. Circumference (approx.): S 30-34cm, M 35-41cm, L 42-47cm Contents: Set of 2 Colors: Choose from Black / Black x Gray / Black x Red. *Please specify your desired color in the "Requests" section when filling out the order form. Materials: Nylon, Polyurethane, Silicone Suitable for all sports, including hiking, running, marathon, cycling, training, basketball, soccer, tennis, fitness, and golf. *Do not use while sleeping. *Do not use if you have any wounds, eczema, or circulatory disorders. *Discontinue use immediately if you experience any abnormalities. For cleaning, hand wash in fresh water below 30 degrees Celsius and air dry in a place away from direct sunlight.