Rare Metal 2Ultra-light SUPERCRITICAL foam cushion midsole designed by Brandblack for VibramProprietary BRANDBLACK High traction WRAPTECH Vibram rubber outsole and shank for mid-foot supportLeather reinforced hyper strong nylon upper and toggle lock down for comfort and strengthInternal lining and padded collar area for maximum comfortWeight 12 oz ( sz 9 ) Slim fit (a size larger is recommended for absolute comfort). Color: white