The Mizuno Wave Creation 18 is cushioned enough to go the distance, but fast enough to keep you on your toes, resulting in a smooth, comfortable run, every time. Breathable mesh upper with synthetic overlays for lightweight support. U4ic midsole cushioning with Infinity Wave in the heel for a faster transition from heelstrike to toe-off. Articulated forefoot Wave adds flexibility. Carbon rubber outsole for durable traction on any surface. Forefoot flex grooves improve propulsion and create a smoother running stride. Wt. 9.7 oz.