[COMPREHENSIVE PROTECTION] --- This pair of knee pads is a solution to reduce swelling, soreness, stiffness and muscle recovery, while providing double protection for the knee. [NON-SLIP DESIGN]-The inner layer of the knee pad booster has silicone spots. This knee pad is ergonomically designed to fit snugly, not afraid of sliding, and easy to wear. [HIGH-QUALITY MATERIALS]---Three-in-one OK composite cotton fabric, the outer fabric is lint-free OK cloth, washable; the middle fabric has shock-absorbing EVA to reduce the impact on the knee; the inner fabric uses breathable SBR cotton Sweat-absorbing material. [FUNCTION UPGRADE] --- New design on both sides of the spring, no pressure on the inside of the knee, elastic upgrade, more comfortable to wear. In addition, the new up and down sliding device can adjust the spring force. [SCOPE OF APPLICATION] ---Applicable to all sports activities that bear great pressure on joints, such as running, basketball, football, soccer, golf, bicycle, tennis, hiking, volleyball, skiing, etc.