Design: The Mach 7 features a low-profile cushion bed that keeps your foot closer to the ground, and utilizes a firmer material designed to provide an efficient push-off The Mach 7 features a symmetrical bed of cushion without additional prescriptive technologies. Designed to provide the support you want and nothing you don't 100% rPET engineered mesh upper Protective toe cap 360-degrees of reflectivity 30% sugarcane compression molded EVA foam midsole Sticky rubber/Durabrasion rubber outsole Removable sockliner Additional Details Heel-To-Toe Drop: 5.00 mm