From Merrell, the Women's Maipo Explorer Sieve Hiking Sneakers feature: PU coated textile upper Stretch collar for easy on and off 100% recycled bungee lace for the perfect fit 100% recycled eyestay webbing 100% recycled elastic heel pull tab webbing 100% recycled elastic lace keeper 100% recycled breathable mesh lining Integrated EVA foam insole FLEXconnect® dual-directional flex-grooves in the midsole for enhanced ground connection 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: 50mm Drop: 25mm Lug: 4mm Perimeter Trail Lug: 4mm Imported.