Waterproof ankle boot with zipper and spike outsole. Upper is softshell fabric, with rubber toe. DrymaxX membrane on fleece lining in sock construction keeps feet dry, and Thermal cold blocking insole helps to keep warm. Halti's New GripmaxX Spike 2 rubber outsole with 16 carbon steel spikes gives perfect traction on slippery slopes, while Phylon midsole is shock absorbing.