Meets ASTM Safety Standards: This leather non-metallic safety toe work boot with HRO designed TriTek rubber outsole is heat, slip, impact, compression, and electrical hazard resistant to meet ASTM F2413-18, M/I/C, EH, and ASTM F3445-21, SR safety standards. HRO designed soles are heat resistant to melting at a minimum of 475º Fahrenheit. Non-Metallic Safety Toe: Non-metallic safety toe provides an additional protective layer of defense from many hazards that may be encountered at a worksite. The composite safety toe is reinforced with abrasion-resistant ArmaTec technology. Durable & Waterproof: The full grain leather is protected with UltraDry waterproof construction that combines moisture management lining with waterproof components for dry, long-lasting comfort and performance. The upper is fused to the sole without the need for glue or stitching for a direct attach construction to produce a durable, reliable, and watertight bond which results in a more flexible, lightweight work boot. All-Day Performance: The removable memory foam-EVA footbed gives your feet long-lasting comfort while high-rebound EnerG midsole delivers a recharging burst of energy with every step to fight fatigue and the CuShin comfort tongue helps reduce pressure on your shin from the top of the boot tongue. A layer of 400g insulation offers extra warmth in cold weather. Custom Fit: Dial in to fast, effortless, precision fit with the BOA Fit System, built for all-day performance in any environment. Push in to engage the system, turn the dial to micro-adjust to a custom, precision fit, and pull up for fast release.