Contains 100% certified recycled polyester, certified by Control Union CU811033. Recycled Polyester made from 100% rPET. Doub... Contains 100% certified recycled polyester, certified by Control Union CU811033. Recycled Polyester made from 100% rPET. Double layer knit. Cotton twill patch for decoration. TearAway label for ease of rebranding. The recycled polyester used is equivalent to 2.5 bottles of 500 ml.