Sorel Caribou II Brown Leather Waterproof Winter Snow Boots Waterproof leather upper. Hand-crafted waterproof vulcanized rubber shell. Seam-sealed construction. Sorel AeroTrac rubber outsole. Removable wool felt liner Insulation. Faux fur cuff. 2.5 mm bonded felt frost plugs. Temp rated to -40° F/-40° C Style: NM1000-280 Color: Buff / Tan US Men's Size 12 UK 11 EUR 45 Preowned. Good used condition. Package weighs 7 lbs