THERMALOCK: 8000mm WP WR resistant coupled with Critical seams are sealed for added protection from the elements; ALL-WEATHER PROTECTION protects against the COLD, SNOW, RAIN and WIND. THERMATECH: This technology removes the bulk and weight of the insulation, allowing greater mobility. Keeps you warm at temperatures from -20 to plus 35 degrees depending on the activity. Engineered recycled 85g of insulation offers maximum warmth. DURABILITY: 100% Polyester BALLISTIC 600 Denier Oxford found on the Ankles, Hem and Scuff Guards help resist daily wear and tear. ADDED FEATURES: Fleece-Lined Hand Warmer Zip Pockets for added security; O-ring for keys, gloves, and lift tickets; Boot Gaiters with Grippers form a seamless integration with boots to keep the warmth in and moisture out. FIT: Adjustable Shoulder Strap and Waist for a customized fit.