Features of the The North Face Women's Sierra Mid Lace WP Boot Upper: Waterproof, full-grain leather Upper Rustproof metal hardwAre Minimalist faux-fur top collar Waterproof, seam-sealed construction 100 g synthetic Insulation OrthoLite sockliner Sole Unit: Single-Density, molded-EVA Midsole Rubber wrap in the toe for additional durability and protection Surface Control rubber Outsole optimized for winter conditions Approximate Weight (1/2 pair): 12.93 oz (366 g)