From Merrell, the Women's Speed Strike 2 Trek Sneakers feature: Breathable mesh, suede and synthetic upper 100% recycled laces 100% recycled heel pull tab webbing 100% recycled breathable mesh lining Removable EVA footbed for all day comfort 100% recycled mesh footbed cover Lightweight EVA foam midsole for stability and comfort Merrell sticky rubber outsole with durable traction that grips when and where you need it Stack Height (heel/toe): 34-24mm Imported.