1Soft bilateral springs reduce knee load and smoother during exercise. 2The knees parts are lined with soft silicone to prevent bruises and protect the knees. 3The upper mouth (near the thigh) uses silicone anti-skid strip, do not worry about sliding when you exercise, concentrate on the exercise. 4Suitable for outdoor sports, ball sports, indoor fitness. 53 different sizes for you to choose, meet your different needs.
