This knee brace is made of high-quality nylon knit fabric, carefully woven with a tight and elastic texture. The four-way stretch design allows it to perfectly fit the curve of the human knee joint, whether bending, stretching or twisting, it can easily follow the leg movements, giving the knee a full range of wrapping and support, as if it were a customized second skin for the knee. This fit not only enhances wearing comfort, but more importantly ensures that the knee pads will not shift, roll up or slide down during exercise, and will always protect your knee joints in a stable manner.