Mach has the award-winning Clayton in its genes, which boasts the same startling trio of benefits: maximal cushion and responsiveness in a surprisingly lightweight package. Mach takes lightweight performance to a new level with a dual-density PROFLY™ midsole and a full R-BOUND™ outsole. PROFLY™ provides a forgiving landing and responsive toe-off while the R-BOUND™ outsole offers additional responsiveness as well as durability. Mach stands out further from the pack with its lightweight and open engineered mesh upper, which offers both a comfortable fit and optimal breathability.