The Proterra Sport is designed for optimal natural movement with its revolutionary glove-like upper. Merrell Stratafuse Fabric upper provides a glove-like fit for lightweight durability and natural movement. Bellows tongue keeps debris out. Protective TPU rand and toe cap. Removable EVA footbed treated with Aegis antimicrobial solution to help keep odor under control. 4mm Drop/10mm Cush/21mm Stack Height. Low profile midsole 9mm heel/5mm ball = 4mm drop. Molded TPU arch shank. Minimal design PU midsole increases ground contact and enhances stability. 2.5mm sole lug depth. Merrell Proterra sticky rubber outsole. Imported. Measurements: ; Weight: 15 oz ; Product measurements were taken using size 11.5, width M. Please note that measurements may vary by size.