4 INTEGRATED SPRINGS: There are 2 hidden spiral metal strips on each side of the knee pad, which provide strong support to the knee joint without impeding movement and effectively protect the knee. 3 ELASTIC VELCRO STRAPS: 3 Velcro elastic bands at the top, middle and bottom to improve the stability of the knee joint. The adjustable velcro can fully adapt to each knee size. Freely adjust the tightness without worrying about size adaptation. OPEN LAMP RING: The gel pad that wraps around the patella helps hold the patella in place, keeps it in a comfortable, supported position, and allows for proper movement. Provide extra knee support, protect the knee from injury during exercise and avoid external abrasions on the knee. BREATHABLE FABRIC: The knee pads are made of breathable material, the ventilation holes can offer a heat dissipation function during exercise, absorb sweat and breathable, ensure good air circulation and maintain a comfortable skin environment. STABLE AND ANTI-SLIP: It adopts special non-slip fabric with dot neoprene in the middle, comfortable and soft to wear. Elastic compression fabric and other components can significantly reduce pressure on the knee, providing maximum stability and protection.