The Double D Rings Hinged locking mechanism, with six built-in steel springs, provides superior stability. High-quality materials provide compression and support, yet allows for breathability. Adjustable straps that allow desired level of pressure to your knee and patella; Integrated technology to reduce odor, Breathable and comfortable. Extra Support for Running, jogging, basketball, tennis, golf, weightlifting, and all sports. Four flexible spring side stabilizers and four straps on this knee brace offer you all-around knee support. The unique puller-shaped design allows easy on/off. Effectively reduces inflammation, swelling, soreness, stiffness, etc, has a heating effect for muscular recovery.