Timberland Men's Thorton Waterproof Insulated  Boot 100% Leather/Synthetic Imported Synthetic sole Rugged boot featuring logo-embroidered tongue patch and D-ring lacing with speed-lace hardware at ankle Leather upper from silver-rated tannery and waterproof membrane to keep feet dry Gusseted tongue to keep debris out 400g insulation for warmth Climapath technology for moisture management