The upgraded Mach 6 features a super critical foam midsole, along with a creel jacquard upper engineered with zonal breathability and refinements to the collar and tongue that minimizes bulk and cuts weight. Textile upper and lining. Removable ethyl vinyl acetate insole. Best for everyday run, race. Stability: Neutral; features a symmetrical bed of cushion without additional prescriptive technologies. Cushion: Responsive; low-profile cushion bed that keeps your foot closer to the ground, and utilizes a firmer material designed to provide an efficient push-off. Heel-to-Toe Drop: 5mm Rubber and EVA outsole. Imported. Measurements: Heel Height: 3 in Weight: 8 oz Color: Black/Black