Full-grain leather upper with gusseted tongue and nylon locking snow collar to protect from the elements, D-Ring front lace fastening system for secure comfort, Arctic Rubber shell to provide lightweight flexibility, cold-resistance, and resilience, GelFlex anti-fatigue midsole for shock absorption and rebounding, Polar Rubber outsole for maximized grip and durability, Thermaplush soft, next-to-foot wicking layer for warmth and Form-fitting B-Tek Foam lining for comfort, B-Tek Heat lightweight, 4-channel hollow-fibre insulation for high-loft breathability in a broad range of temperatures, Hydromax layering for improved moisture management, Vapourized Aluminum Membrane for energy reflection and heat regulation and PolyWool polyester wool blend for breathable warmth, DiamondNet insulation for wind-resistant protection with a lightweight feel,