Icebug Women's Sorix2 BUGrip 2.0-W 100% Leather and textile Synthetic sole Shaft measures approximately 8" from arch Heel measures approximately 1.75" BUGrip outsole with carbide tip studs for extra traction in wet snowy or icy conditions Rubber outsole with aggressive lugs Action leather and textile upper with BUGdri waterproof membrane Boa pile and Thinsulate lining for ultimate warmth Thermostatic sole with aluminum insulation sheet to keep cold out Keeps feet warm down to -40 degrees Great for working outside snowmobiling and ice-fishing