1Prevent sports sprains and promote the recovery of injured joints and muscles. 2Fit tightly to your knees and is easy to extend without limitation, providing great support for your knees. 3The material is light and thin, breathable and comfortable, reducing the pressure on your joints and improving sports performance. 4Nonslip and elastic fabric to avoid up and down sliding and tumbling during exercise. 5Suitable for all kinds of sports, such as running, horseback riding, hiking, playing basketball or football, etc.