A sturdy oil and slip-resistant outsole provides superior traction on various surfaces. Durango?« X-Pand System?äó features a hidden gore expansion so that the fit is universal and easy to wear. The square toe is made of full-grain leather, and the rolled shank area, 1 1/2" rocker heel, and soft mesh lining make for a comfortable fit. The cushion flex insole with rigid rear foot stabilizer, genuine Goodyear?« welt construction, genuine leather welt with double row cotton stitch, durable and rigid nailed ABS heel, and littleway shank stitch ensure durability.