The North Face - Snowkat (Black/Nickel Grey) - Men's: HyVent waterproof membrane that consists of a tri-component, multi-layer formula for waterproof protection, moisture permeability, and durability. 200 g. PrimaLoft insulation. 1.6-1.8 mm. waterproof Nubuck and pig suede upper. Double adhesive latex seam-sealed construction. AgION anti-microbial dual-density X-2 footbed. Cushioned, lightweight CM EVA midsole. 2/3-length nylon shank. TNF Winter Grip rubber outsole consists of a softer, tackier rubber compound designed specifically to provide ample traction in the wettest and slickest weather conditions. Comfort range: -25F/-32C.