The trainer upper is crafted from 100% recycled polyester, excluding trims. The recycled polyester in this product was created by reprocessing existing materials. Knit and mesh recycled polyester upper. Recycled blend comfortable foam insock. Recycled blend polyester lining. Vibram® natural rubber outsole. Calvin Klein logo on the tongue, pull tab and ankle. Runs true to size. Country of origin: China. Colour: natural