1.80%Polyester, 20%Latex, Fiber Content: 86%Nylon, 4%Spandex,10%Polyester, Support rod: Nylon, Patella pad:TPE 2. KNEE SUPPORT TECHNOLOGY— Dual metal spring stabilizers(4 springs) fit tightly with your knee joint, 2 specially designed velcro fixing systems for fit, open patella & back design and ultra-soft bandage of mesh weave technology. These special functional components strengthen side support and maintain your joint stability. It will effectively disperses your knee pressure, and assist knee injury recovery. 3.TARGETED RELIEF & SUPPORT— The 4 memory spring stabilizers on both sides will provide stability and protection for weak and injured knee, significantly reduce the burden of kneecap and provide maximum support for your knee joint. Wrap around patella to enhance the support of knee and relax tendons, avoid pulling, prevent muscle strain. Widely used in many sports such as Running, Jogging, Gym, Weightlifting, Basketball, Volleyball, CrossFit, Tennis and more! 4.D DESIGN— Ergonomic design: 2 sponge pads are sewn on both sides of patella, this knee brace will fit perfectly with your knee joint, so it will prevent potential sports injuries without sacrificing your mobility! Ultra-soft bandage and high-elastic fabric will stay in place all day. Specially designed 2 V-shaped Velcro straps are highly adjustable. 5.COMFORTABLE EXPERIENCE—Overcome the defects of similar products, knee braces with no allergies and itchiness. Open patella and air vents back design will avoid pressure to patella and sweat accumulate. Soft bandage fabric with airflow vented tech to reduce odor and moisture, circular breathing, breathable and absorbing sweat. Mesh weave fabric it easy to wash, more reliable than other knee wrap to provide extra reinforcement without sacrificing comfort, so you can wear it all day long!