D-Ring front lace fastening system; Pull loop at the back for ease of entry; Arctic Rubber shell to provide lightweight flexibility, cold-resistance and resilience; EVA midsole for lightweight insulation and cushioning; Polar Rubber outsole for maximized grip and longevity of boot at cold temperatures; Thermaplush soft, next-to-foot wicking layer for warmth; 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; Vapourized Aluminum Membrane for energy reflection and heat regulation; PolyWool polyester wool blend for breathable warmth