The Kamik Spencer Mid is made with waterproof DriDefense membrane leather upper. Lace up style with padded collar. Moisture wicking soft boa lining with HEAT-MX sustainable thermal insulation. Ortholite Hybrid ultimate eco-friendly comfort footbed. AEGIS odor-eliminating treatment. SNO synthetic rubber outsole. Vibram Arctic Grip A.T. wet ice technology with flexible, superior grip in the snow. Comfortable down to -22F. Leather sourced from a tannery that achieved a Gold Rating from the Leather Working Group (LWG).