Women's MACH X 3 Size:5 Nike describes it as a

Nike describes it as a hybrid between training and racing use

Four different interchangeable massage head options

For fitness enthusiasts

Enhanced design

Women's MACH X 3 Size:5 Nike describes it as aA propulsive speed training partner. Who doesnt want to go Mach speed? Our thoughts, exactly. A plated daily trainer that brings the heat to speedwork, our Mach X 3 is the perfect addition to your running arsenal. Built for up tempo training miles with an extra resilient PEBA topped midsole and snappy Pebax plate, weve refined the collar and implemented a breathable woven upper to keep things light, cool, and fast for those next level efforts. Best