Triathletes will love the efficiency and forward ride of Karhu Flow Tri running shoes. A timeless style and cool colors generate a fast and fierce look. You’ll enjoy experiencing a highly responsive and lightweight, flexible ride. Ideal for neutral, competitive runners.Upper: Moisture-wicking collar liner and dual-pronged memory foam heel provide a dry and comfortably locked-in fit. Velcro® Strap and easy-pull heel tab secure the foot and allow for faster transitions. Quick Lacing System allows shoe to be locked down with one-pull of the cord. Near Seamless One-Piece Air Mesh offers quick-drying and breathability.Midsole: Directly-placed EVA Fulcrum facilitates efficient transitions through the gait cycle. Injection-molded EV-icient midsole provides increased energy return. Removable insole. Outsole: Wearable EVA with compression molded rubber.