CVS Health™ Hinged Brace allows for natural flexing and contracting of the knee and keeps the kneecap in place during physical activity. It helps manage swelling and provides structural support. It provides Improved support and stabilization which is beneficial to injuries where the knee requires great stabilization to keep the bones and ligaments from moving around throughout the healing process Dual-side axis hinges give the knee additional support and stability while permitting a natural range of motion. Lateral stabilizers provide rigid support. Dual straps allow for customizable fit. A cushioning gel pad around the open knee provides comfort and protection. SIZE: 16.0-22.0 in (40.6-55.9 cm). Measure around leg 3 inches above kneecap to ensure fit. Materials: Neoprene blend, Nylon, Polyester, EVA, Aluminum, Plastic (Polyoxymethylene, ABS)