The combination of the Vibram SPE midsole and Nisqually outsole gives unparalleled grip on wet and dry surfaces while providing superior cushioning without the weight. Full-Grain Leather Upper 40 oz per pair 4.5" Soft Toe 200G PrimaLoft Insulation Vibram Arctic Grip Danner Dry ...The combination of the Vibram SPE midsole and Nisqually outsole gives unparalleled grip on wet and dry surfaces while providing superior cushioning without the weight. Full-Grain Leather Upper 40 oz per pair 4.5" Soft Toe 200G PrimaLoft Insulation Vibram Arctic Grip Danner Dry Waterproof Lining Removable OrthoLite Footbed Vibram SPE Midsole Vibram Nisqually Arctic Grip Outsole Nylon Shank TERRA FORCE X platform to Enhance Maneuverability, and Protection from Arch Overwork and Fatigue