Columbia - Titanium Ice Dragon EXT (Flax/Treasure) - Men's: A non-shell version of the popular Ice Dragon boot. Lightweight, comfort, warmth and waterproof protection. Designed for snow hiking or snowshoeing. 5 high boot. Rustproof metal alloy ghillies and speed hooks. 400g Thermolite(R) insulation, rated -45F/-43C. Removable moisture wicking Drysole(tm) footbed with mesh cover. ThermaShield(tm) frost plug insole. Molded EVA midsole with nylon shank. Vibram(R) rubber compound outsole with minimal loading lug tread pattern.