The North Face Four Shadows GTX Winter Boots - Men's

The full-sized Four Shadows GTX winter boots offer serious insulation and waterproof protection for winter activities in frigid conditions. Synthetic leather and nylon uppers are lightweight, durable and flexible; plus, they resist water absorption. Waterproof, breathable Gore-Tex® membranes are seam-sealed to prevent water leaks while allowing moisture vapor out, keeping feet comfortable. 400 grams of PrimaLoft® Eco recycled insulation ensure warmth and comfort in conditions to -40°F during active use. Extra-high coverage collars with gusseted tongues keep out snow; heel loops aid in entry and exit. Dri-Lex® fleece collars and tongue linings help move moisture away from your feet. Features removable footbeds with dual-density X-2™ cushioning and AgION™ antimicrobial odor protection. Injection-molded thermoplastic urethane shanks deliver torsional stability while reducing cold temperature conductivity. TNF Winter Grip™ rubber outsoles grip snow and wet surfaces for solid traction. Temperature-sensitive Ice Pick™ rubber lugs on outsoles harden when temps fall below freezing, providing extra bite into the terrain.