UPGRADED MATERIAL: Vlela knee braces are made of 70% nylon ,18% elastic ,12% polyester ,compared to other knee sleeves ,Vlela knee brace added more elastic material to make sure the good elasticity and strengthen the compression FUNCTIONAL X-SHAPED DESIGN AT THE PATELLA: Special ergonomic X-shaped longitudinal braiding at the patella will fits tightly with your kneecap and effectively disperses pressure ,strengthen the stability of the knee joint , keeping your knee warm, provide muscle stabilization, alleviates swelling, discomfort, soreness, and inflammation UNIQUE ANTI SLIP JELLY GEL: For the uncomfortable wearing problem caused by the ordinary anti-slip silicone bands used in most similar knee brace sleeve, vlela runners knee brace use unique jelly gel, non-slip and softer, comfortable enough to wear all day and stay in place for vigorous movement, boost your athletic performance such as running,jogging,volleyball, weightlifting,basketball, tennis and more REASSURING SUPPORT KNEES : Vlela knee running support is designed to conform to your knee ,and the 3D densely woven technology makes it fit your knee 360 degree , functional pressure technology giving your knee great compression support without cutting off circulation, Best knee brace for knee pain relief,meniscus tear, ACL,arthritis FULL FREEDOM OF MOVEMENT:Vlela knee brace made a good balance between compression and movement , You can feel the support and still have range of motion. fit both left knee and right knee , universal for men and women , idea for everyone who wants strong knee support. Size Large