Its timeless 6 inch profile is crafted in unlined Bourbon Brown leather for a naturally cool feel and features 4 row stitching for enhanced durability plus an orthotic insole for comfort. Designed for high heat applications like welding and steel fabrication, its heat resisting Vibram Street Warrior outsole is built to endure with abrasion, oil and slip resisting technology. This boot meets ASTM 2413 safety footwear standards. ASTM F2413 covers the minimum design, performance, testing, labeling, and classification requirements for footwear designed to protect against a variety of workplace hazards that can potentially result in injury.