Features include a Dura leather and mesh upper. Bellows tongue. Synthetic leather toe cap and heel counter. Breathable mesh lining treated with Aegis? antimicrobial solution. M Select FRESH fights odors. Ortholite? anatomical footbed. Molded nylon arch shank. Compression-molded EVA footframe. Merrell? Air Cushion. 5mm sole lug depth. Vibram? Multi-Sport sole/TC5 rubber.