Built for runners who want speed-day cushioning without extra weight, the Mach 4 is our pick for high-mileage training and tempo work. The dual-layer PROFLY midsole ¡ª soft foam on top, rubberized foam below ¡ª delivers a cushioned landing and a snappy toe-off. Engineered mesh and an anatomical Achilles construction keep things breathable and locked in through the miles.
- PROFLY dual-foam midsole pairs a soft top layer with rubberized foam beneath for cushioned landings and a propulsive toe-off
- Engineered mesh upper moves air efficiently ¡ª a real asset during long runs in Southern heat and humidity
- Anatomical Achilles construction reduces pressure at the heel collar for all-day comfort with zero hot spots
- Rubberized EVA outsole keeps the shoe light underfoot while still delivering reliable ground contact on road surfaces
- Available in Dazzling Blue/Green Ash ¡ª a standout colorway that matches the shoe's fast-feeling ride