UNISEX: PLEASE ORDER IN MEN’S SIZE!

Extreme Heat Protection. Industrial-Grade Performance.

The HYTEST UNISEX 8" ALLOY K04321 is engineered for high-heat, high-impact environments where safety is critical. Built with premium FR leather, advanced metatarsal protection, and Aerogel thermal insulation, this 8-inch boot delivers uncompromising defense against heat transfer, impact hazards, and slick surfaces. When the job gets hotter, this boot works harder.

Key Benefits:

• Premium Full-Grain FR Leather Upper: Flame-resistant durability built for demanding industrial conditions.
• Alloy Safety Toe: Lightweight protection meeting ASTM F2413-24 I/C EH Mt SR standards.
• Internal Metatarsal Guard: Shields the top of your foot from impact and compression hazards.
• Aerogel Thermal Insulation: Advanced insulation technology protects against heat transfer in extreme environments.
• Moisture-Wicking Mesh Lining: Helps keep feet dry and comfortable during long shifts.
• Removable Tri-Layer Anti-Fatigue Footbed: Cushions every step and reduces foot fatigue.
• Heat, Oil & Slip Resistant Rubber Outsole: Meets ASTM F3445-24 SR standards for dependable traction.
• Heat Resistant Outsole: Rated up to 500°C / 932°F for extreme jobsite conditions.
• Goodyear® Welt Construction: Long-lasting durability with the ability to resole for extended wear.
• Work Last Design: Built for stability and comfort in demanding industrial settings.

Who It’s For and How to Use

The HYTEST 8" ALLOY K04321 is ideal for welders, foundry workers, oil and gas crews, and heavy industrial professionals operating in high-heat and high-impact environments. Designed for long hours on concrete floors and rugged terrain, this boot delivers certified protection, thermal defense, and durable construction to keep you safe, steady, and productive all shift long.