1、Elastic Compression Fabric: The use of highly elastic compression fabric is tight fitting breathable and can reduce knee pressure and pain. 2、Built in Silicone Ring: Built in pressure relieving silicone ring stabilizes patella and protects knee joint, no fear of collision. 3、Elastic Support: The fish scales support the spring bar for strengthening stability, one on each side. Elastic in all sides, not easy to slide, no flanging, no curling. 4、Thicken Design: Thicker than other knee pads and provide extra reinforcement without compromising comfort, so you can wear them all day long. 5、Wide Applications: Widely used in many sports, such as weightlifting, basketball, running, jogging, volleyball, gym, tennis, hiking, etc. Item Type: Knee Brace Material: Stainless Steel, Nylon, Polyurethane Fiber, Silicone, Spring Color: As Pictures Shown 2 x Knee Sleeve