AQ 52501 Knee pads are made of anti-mold and anti-bacterial fabric, nylon comfortable fabric, comfortable to touch; high elasticity foam rubber, porous design, preventing stuffy heat; anti-mold and anti-bacterial fabric in the lining, anti-bacterial and anti-odor, not easy to be allergic. Patella pressurized pad design, soft sponge covers the pressurized pad, better shock absorption and pressurized function. The additional pressure tube inside the pad maintains the length of the patellar ligament at one-third of the length recommended by medical research, reducing discomfort and helping to solve the problem of jumping knee. Bilateral buckle design, both sides of the buckle according to the demand adjustment, section of the elasticity, both sides at the same time pulling to make the force uniform, not easy to shift.