1. 2 additional adjustable Velcro straps and 2 specially designed Velcro systems which are the most suitable, four spring stabilisers and open patella design. Medical silicone nonslip strips and large area of openings, breathable and sweatabsorbent, nonallergic and nonitchy. 4 sizes. 2. The anatomically contoured patella gel cushion surrounds the kneecap, and the doublesided metal spring stabilizer (4 springs) fits snugly with the knee together. These special functional elements can strengthen the side support and maintain common stability. 3. The patella gel pad, spring stabiliser, 2 additional adjustable shoulder straps, elastic compression fabric and other components can significantly reduce pressure on the knee joint and help the meniscus recover. Wrap the patella, improve the stability of the kneecap, relax the tendon, avoid pulling and prevent muscle strain. Relieve pain, prevent tan damage, fractures, dislocations, etc. 4. The knee support designed for knee pain or joint damage can fit perfectly into your kneecap. Nonslip silicone strips and highly elastic fabrics prevent up and down during training. Ergonomics: 360° fits perfectly to the curve of your kneecap. 5. The breathable fabric absorbs moisture and wicks sweat away and provides allday comfort during the event.