* Select quality spandex, nylon and other materials, four-way-elastic, comfortable and fit.
* Silicon pad fits the patella tightly and difficult to slip off, plays the role of fixation, massage, shock absorption and protection for patella.
* Metal spring support bars on both side, soft and elastic, improve the explosive power of knee joint when doing sport.
* Improve the strength of knee joint, relieve fatigue, increase endurance, protect the knee perfectly.