High performance polyester/nylon non-insulated shell with a removable ultra warm 3M Thinsulate Water Resistant Insulation 150g liner. Dual stage 10,000mm/10,000g/m2 waterproof, windproof, breathable system plus DWR (durable water resistant) outer surface treatment repels moisture. [Stage 1] : Ven-Tex 2.0 laminated shell materials. [Stage 2] : Fully Seam Sealed Ven-Tex 3.0 free-hanging membrane with air flow ports. Backcountry Series: designed to excel both on and off the trail Critical seams sealed. Comfort-Flow polyester mesh lining. 500D Airdura reinforced seat. Kevltec reinforcement in knee, inner lower legs and cuffs. 2-way full length waterproof leg zippers. Zippered hand pockets. Ventec zippered thigh vents with snow blocker mesh. Gusseted knees with action flex panels for non-binding fit. Precurved seat with action back flex construction. Inner snow gaiters attach to boots. 3M Scotchlite Reflective materials. Adjustable suspenders.