[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.[Comfortable and breathable] Knee Brace are made of high-quality polyester 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 antirinkle shape retention, and provides body comfort and support during use.[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 ergonomic design]According to the curvature of the knee and leg, we are different from other products in the market. We use the left knee and right knee design, which is more ergonomic, making the knee protector fit more perfectly. Excellent support and comfort in all directions.[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 13.8-23.2 inches leg circumference. If you find any probl or suggestions, we will listen and solve the probl until you are completely satisfied. We will continue to provide you with excellent products and services