K-Swiss Women's Speedster Tennis Shoes Synthetic Synthetic A lightweight and durable high performance tennis shoe that is also suitable for indoor sports High-abrasion synthetic upper with a breathable mesh tongue, and perforated detail on the toe, sides and heel for ventilation Molded EVA sockliner with K-Swiss Superfoam technology offers exceptional support, long lasting comfort, and cushioning Rigid TPU midfoot shank provides stability Non marking durable Aosta II high density rubber outsole delivers durability as well as traction