After-sales service: Before purchase, please measure the leg circumference 4 inches above the knee. Please check the picture in the list for the size chart. Our products are suitable for 35-64cm leg circumference. If you find any problems or suggestions, we will listen and solve the problems until you are completely satisfied. We will continue to provide you with excellent products and services. Best Gifts Idea For Your Friends And Family!: Please Check Size Chart! this new Medical-grade knee sleeves for meniscus tear,arthritis,ACL,joint pain relief,sports injury recovery. Widely used in many sports such as weightlifting,basketball,running,jogging,volleyball,CrossFit,gym,tennis,hiking and more!. ?Stable support: Hidden soft and elastic spring support bars are placed on both sides of the knee joint support to disperse the pressure of the knee joint during exercise, provide sufficient compression and knee joint support, and effectively prevent meniscus tears, strains, and Sprain, relieve ACL, LCL, MCL, relieve tendinitis and knee arthritis pain. It can also save effort. They are a good companion for you to exercise and recover from sports injuries. Comfortable and breathable: Knee Brace are made of spandex fiber. Skin-friendly, no peculiar smell, mesh design. The inner fabric is in direct contact with the skin, it absorbs sweat and breathes freely. Prevent any unpleasant skin conditions. It has good anti-wrinkle shape retention, and provides body comfort and support during use. ?Adjustable Hook and Loop Fastener: An extended support strap on the knee patella. With high elasticity, fixed compression, you can adjust the tightness according to your choice, and feel the most suitable support for you. The open and adjustable size design makes the knee brace better fixed on the knee, making it better than other same products on the market More stable, not easy to decline. Innovative Design, Comfortable Support: The curves on both sides of the knee brace are ergonomically designed. The center of the patella has an open design, allowing the knee brace to fit perfectly with the knee joint. Upgrade the defects of similar products, carefully designed two V-shaped adjustable pressure belts, not easy to slide, you can adjust the tightness according to your choice, feel the most suitable support for you, and fix the pressure on your knees, very comfortable. Warning: DUE TO A SLIGHT ERROR IN THE SIZE OF THE KNEE PADS, if you have any questions, please feel free to contact us and we will recommend a suitable size for you. AND DUE TO KNEE BRACE SIZE SMALLER, if your size is in the edge, please choose the larger one.