Details In its fourth edition, the HOKA ONE ONE® Mach 4 takes its biggest leap forward, built on themes inspired by the Rocket X and Carbon X. Designed for logging long miles, this everyday trainer delivers a lively ride and energetic underfoot feel that is unquestionably HOKA. Softer and bouncier than the previous iteration, the Mach 4 employs a harmonious blend of foams - merging an incredibly soft, lightweight foam on top with rubberized foam directly beneath. This up-tempo shoe has been crafted with a new pull tab, revamped upper made from heat pressed TPU embroidered yarns, and a refined collar shape that alleviates pressure on the Achilles. Light, fast and unquestionably responsive, the Mach 4 delivers a daily dose of speed. Upper Upper features improved breathability and lightweight details Tongue features strategic cutouts for breathability Engineered jacquard upper provides structure and improved midfoot lockdown Midsole PROFLY™ midsole gives a cushioned landing and propulsive toe-off Early stage Meta-Rocker offers a smooth ride Outsole Rubberized foam outsole provides lightweight ground contact and responsive cushioning Heel N/A Forefoot N/A Offset 5mm Width B Weight 7.1oz. Hoka One One Mach 4 Women's