Anti Slip Silicone At Top Cuff In the market, most knee compression sleeves are very easy to slip off, in order to solve this problem, we add 2 waves of silicone at the top cuff to increase the friction, so that it won't slip down. Elastic and breathable Quality 3D Knitting Elastic yarn with 3D circular technology ensures breathable and comfortable. Easy to wear due to its lightweight and soft material. Fit for Sports and Daily Wear Suitable for all sports activities that place a high amount of stress on the joints such as: running, basketball, soccer, football , golf, cycling, tennis, hiking, volleyball, skiing and much more. You can also wear it in daily life if needed. What you can get 1 pair knee support. NOTE: Check the size chart in the left image carefully, M: 13.8"-16.5", L: 16.5"-18.5", XL: 18.5"-21.7".