Uppers made of Nubuck, pig suede leather and mesh. Merrell Omni-Fit™ lacing system for a secure and easy fit. Bellows tongue provides debris protection. M-Select FRESH provides odor control. Ortholite® anatomical footbed for increased cushioning and support. Molded nylon arch shank for improved stability. Merrell air cushion in the heel for improved shock absorbency. Merrell QForm® Comfort midsole for improved comfort. 4.5mm sole lug depth. Vibram® outsole is lightweight and durable.