TEMPERATURE RATING: FROM 5°C/41°F TO -50°C/-58°F LINER: Heat-mouldable, removable liner featuring B-tekTM Lite BASE: Superlite™ Shell, AirGrip® Midsole and Outsole with Polar™ Rubber contact points Form-fitted tall-height with locking snow collar Waterproof PU coated leather and nylon Cross-shaft speed-lace setup for improved fastening