Comfortable down to -30C. Vegan-friendly. Waterproof DriDefense membrane nylon upper. Lace-up style with padded collar. HEAT-MX sustainable thermal insulation. Moisture-wicking soft boa lining. Ortholite Hybrid ultimate eco-friendly comfort footbed. Odor-eliminating treatment. SNO synthetic rubber outsole. Vibram Arctic Grip A.T. wet ice technology. Flexible with superior grip in the snow. 7" height. 1061g per pair weight.