Mach X 2 Shoe Size:6.5 no matter what your workout

no matter what your workout

Nike Therma-FIT technology helps you stay warm

Get a taste of Altra in a shoe that’s made to help you master the road miles and Stay Out There™

Aptly named

Flexibility: High

Mach X 2 Shoe Size:6.5 no matter what your workoutA propulsive speed training partner. Bolder than ever before, the Mach X 2 brings the heat to speedwork. Inspired by the Cielo X1s race ready geometry, we combined an extra resilient PEBA topped midsole and increased rocker profile for an aggressive toe off, then extended the Pebax plate design for enhanced support and propulsion. With an extra breathable and supportive woven upper and a sleeker collar, this speed trainer keeps things light, cool, and