[Adjustable hook and loop fastener] Extended support strap on the patella of the knee. High elasticity, fixed compression, adjust the tightness according to your choice, feel the support that best suits you. The open adjustable size design allows theknee pad to be better fixed on the knee, making it more stable than other similar products on the market and not easy to fall. Comfortable and BreathableThe knee pads are made of high quality polyester fiber. Skin-friendly, no odor, mesh design.The inner fabric is in direct contact with the skin, absorbs sweat and breathes freely. Prevents any unpleasant skin conditions. Offers good wrinkle resistance and shape retention, providing body comfort and support during use. Stable SupportHiddensoft elastic spring support rods are placed on both sides of the knee joint bracket to disperse the pressure during knee joint movement, provide sufficient pressure and knee joint support, effectively prevent meniscus tear, strain and sprain, andrelieve ACL , LCL, MCL, relieve tendinitis and knee arthritis pain. It can also save effort. They are a good companion for your workouts and sports injury recoveryComfortable Ergonomic DesignAccording to the arc of your knees and legs, we are differentfrom other products on the market. We use left and right knee designs for a more ergonomic fit for a perfect fit. Excellent support and comfort all round. [After-Sales Service] Before purchasing, please measure the leg circumference 4 inches abovethe knee. Please see the pictures in the listing for the size chart. Our products are suitable for leg circumferences of 13.8-23.2 inches. If you find any problems or suggestions, we will listen and fix them until you are completely satisfied. Wewill continue to provide you with excellent products and services