Feature:

   1.Metal spring support,four metal springs on both sides strengthen,support and enhance stability;

   2.Triple locking system,three belts are used,which can adjust the tightness freely;

   3.EVA washer shock,the front opening is designed to stabilize the kneepad,and the built-in soft eva cushioning pad can wrap the patella and  disperse  the pressure;

   4.Five point velcro,five paste points,paste firmly,hook & loop paste is not easy to puck;