Features 4-layer 9 mm ThermoPlus™ felt liners add warmth and are removable for easy drying Waterproofed Nubuck leather uppers are triple-stitched to handcrafted waterproof rubber bottoms for long-lasting wear Warm acrylic fleece pile collars help keep snow and debris out of boots Lugged rubber outsoles help you negotiate snow and slush with confidence Imported. View all Sorel Men's Snow Boots Technical Specs Best Use Casual Footwear Height Mid-calf Footwear Height (in.) 10 inches Footwear Closure Lace-up Waterproof Yes Type of Waterproofing Seam sealed waterproof construction Upper Nubuck leather Lining Removable 9 mm recycled felt inner boot Insulated Yes Insulation Synthetic insulation; removable 9 mm recycled felt inner boot Midsole 2.5 mm bonded felt frost plug Outsole Rubber Weight (Pair) 4 pounds Gender Men's