A. 【Adjustable Velcro】: There is an extended support strap at the kneecap. It has relatively high elasticity and can be used for fixed compression. You can adjust the tightness according to your own needs and feel a suitable support effect for you. This open and adjustable size design allows the knee brace to be fixed on the knee better. It is more stable and less likely to slip compared with some other similar products on the market. B. 【Comfortable and Breathable】: The knee brace is made of polyester fiber. It is skin - friendly and odorless, with a mesh design. The inner fabric is in direct contact with the skin, which can absorb sweat and allow the skin to breathe. It can help prevent some uncomfortable skin conditions. It has fair wrinkle resistance and shape retention, providing comfort and support to the body during use. C. 【Stable Support】: There are hidden soft elastic spring support strips on both sides of the knee joint support, which can disperse the pressure on the knee joint during exercise, provide a certain amount of compression and support for the knee joint, help prevent meniscus tears, strains and sprains, relieve injuries to the anterior cruciate ligament (ACL), lateral collateral ligament (LCL), and medial collateral ligament (MCL), and reduce the pain of tendonitis and knee arthritis. It can also save some effort. They are useful for your sports and the recovery from sports injuries. D. 【Comfortable Ergonomic Design】: According to the curves of the knees and legs, different from some other products on the market, a separate design for the left and right knees is adopted, which is more ergonomic and makes the knee brace fit better. It can provide good support and comfort in all directions. E. 【After - sales Service】: Before purchasing, please measure the circumference of your leg 4 inches above the knee. Please check the picture in the list to get the size chart. Our products are suitable for people with a leg circumference of 13.8 - 23.2 inches. If you find any problems or have suggestions, we will listen and try to solve the problems until you are satisfied. We will continue to provide products and services.