Gray unisex FLOCK SHOES have a phylon sole structure. Phylon sole makes it flexible and lightweight. It helps improve the performance of workouts. Chevron details on the side surface add movement to the design of this performance shoe. The upper surface helps the feet breathe. Polyurethane Faux Leather Upper, Phylon Sole; It cannot be washed in the washing machine.; It can be wiped with a damp cloth that will not impart color to remove stains and dirt on the surface.; After cleaning, it should be left to dry at room temperature.;