Heavy-duty design for any terrain Soft Leather that will mold to your feet High Arch Support Scratch-resistant lowers Stitchdown construction to seal out elements Description Our flagship boot, the Superduty, is a symbol of excellence in craftsmanship. It&';s designed to conquer the most challenging terrains and withstand the toughest jobs, and we have the boots on the ground to prove it. Born in the heart of the northwest, sourced and handmade entirely in America, these all-purpose heavy-duty work boots live for whatever challenge you throw at them. This heavyweight champion keeps going round after round. Each set of JK Superduty work boots is meticulously handcrafted in our Spokane, WA facility using only the highest-grade American leather, fire ready compliant materials, Vibram RedX soles, and stitchdown construction. The lug sole and logger heel expertly adapts to any environment by locking you in place and providing excellent traction. This attention to detail means your JK work boots are built to keep you comfortable and safe around the clock no matter what the situation. Specifications Shaft Height - 10" (boot heels excluded) Uppers - Smooth Milled 8-9oz premium oil-tanned USA leather Lowers - Roughout Milled 8-9oz premium oil-tanned USA leather Thread - High strength, TechnoraA(R) thread, fire resistant to over 900 AdegF Hardware - Traditional brass high-quality eyelets and speed hook combo Insole - Genuine oak-tanned USA leather Midsole - Genuine oak-tanned USA leather Arch support - USA leather Sole - Vibram RedX Adhesive - Fire ready adhesives throughout boot construction Lifespan - Rebuildable & Resolable Origin - 100% Handmade in the United States of America *We have updated our construction method on all Superduty & Fire Inlander products from our 270 Stitchdown to a 360 Stitchdown construction. Both of these methods meet the same NFPA 1950 standards. If you receive a 270 degree construction, and wish to specifically have a 360 construction please email general@jkboots.com*