105 Bison Caulk Boots 10" Black Buffalo Upper, Leather Screw Caulk Sole, Toe Plate & Hobs The most popular logging boot we've ever made. This classic Ed Viberg design with water buffalo uppers featuring snag proof seams, steel toe plate, removable screw caulks and a protective hobnail pattern -- by far the best design on the market today! 10" Black 8-oz full grain water buffalo upper with double leather vamps. Solid brass speed hooks and brass eyelets. Hardwood shank to maintain arch support and torsional rigidity. 10 iron leather insoles & 8 iron leather counters that form fit during wear-in. Double thickness Portuguese loggers leather sole. Stainless steel receptacles & Viberg® screw-in caulks. Large iron hobnails line the sole & heel. Durable 16-gauge steel toe plates. 🇨🇦Made in Canada Available in sizes 4 - 15, in AA, B, D, EE, & 4E widths. Viberg work boots use UK sizes. Find the correct size using our SIZE CHART