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:High Quality Soft & Elastic Polyester Fabric,Nice workmanship. EVA Pads Protector.Mix resin to reduce tear; Coolomg Print Technology – Using Environmental Italian Ink, safe and soft for you or your kids skin, no fade after washes. (Machine washable and dryable, hand wash and air-dry is highly recommand) Fit tensile strength for basketball,baseball,football,outdoor & indoor etc. Sun protection over 98%. Coolomg Care Plan: if the item you recieved have any problem,just contact us and send pictures to us, Coolomg would be free to send same item to you.