Contains at least 50% recycled polyester. Recycled Polyester made from 100% rPET. Ribbed knit. Single layer knit. Engineered ... Contains at least 50% recycled polyester. Recycled Polyester made from 100% rPET. Ribbed knit. Single layer knit. Engineered crown for maximum comfort. Wide cuffed design for optimal decoration. TearAway label for ease of rebranding. The recycled polyester used is equivalent to 2 bottles of 500 ml.