Sleek trainer that can withstand the intensity of your workouts. Convexus innovation comprises a series of arch release cavities in the heel strike zone that provide a dynamic approach to cushioning at the point of impact. Upper is a blend of leather, synthetics and mesh that all-together provides a durable yet breathable feel. Double-lasted construction. Removable, molded, Durapontex sockliner offers durable cushioning. Compression molded EVA midsole, with injected TPU shank and polyurethane heel unit, for support and cushioning. Solid rubber outsole allows for grip and durability while forefoot flex grooves enhance toe-off propulsion.