This durable snow boot is an essential for keeping you safe, warm and comfortable on icy terrain and in fiercely cold conditions.Perfect for: Global explorers in need of durable protection from extreme weather conditions and rugged terrain.Upper: A durable upper with a PolyWool™ collar provides lasting protection and warmth. Removable Tri-Fit multi-layer inner boot system features form-fitting Polywick™ lining that wicks away moisture, hi-density insulation layer for long-lasting breathability and warmth and a Vapourized Aluminum Membrane for delivering energy reflection and heat regulation. Lower: A GelFlex™ anti-fatigue midsole delivers shock absorption and rebounding, while a Premium Rubber sole provides flexible durability. B-Tek™ Dry Waterproof Base is waterproof technology offering the maximum level of wet protection at base of the boot. 11 1/2" shaft Lace-up style Leather and textile upper/textile lining/rubber Imported Interior liner is replaceable PolyWool™ polyester wool blend for breathable warmth Temperature rated (minimum vs. maximum) -14°F to -22°F/-25.5°C to -30°C Leather and wool upper/synthetic lining/rubber sole Imported