COOLOMG 1 Pair Non Slip Compression Leg Knee Long Sleeves for Sport Football Basketball Cycling Strech Adult Child Size XXS-XL Package Included:Pair (2PCS).Thanks for the suggestion and support from all our COOLOMG customers.According to the former data we have updated the size chart on 3/26/2018.Hope to bring you excellent expreience. Material:90% Polyester+10% Spandex,High Quality Soft & Elastic Polyester Fabric,Nice workmanship,increased blood transport to muscles over the entire length and keep the legs warm Non-slip design can reduce rolling up and sliding down,ideal for basketball,football,running,soccer,tennis,hiking,weightlifting,yoga,fitness. Compression leg sleeves relieves muscle stiffness,extra soreness and offers rejuvenating relief from arthritis,osteoporosis,tendonitis,pain & discomfort.UV protection over 98%. Coolomg Care Plan: 100% Lifetime Guarantee Warranty; No Reason Refund; No Reason Resend. (Whoever you or your kids, whatever teared or ripped, just send pictures to us, Coolomg would be free to send same item to you.)