Soft Leather that will mold to your feet High Arch Support Scratch-resistant lowers NFPA compliant materials  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, NFPA 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 8-9oz premium oil-tanned USA leather Lowers - Roughout 8-9oz premium oil-tanned USA leather Thread - High strength, NFPA compliant Technora® fire resistant to over 900 °F 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 - NFPA compliant adhesives throughout boot construction Lifespan - Rebuildable & Resolable Origin - 100% Handmade in the United States of America