Anti-Fatigue Technology: A comfort system designed with shock-absorbing, geometrical technology that returns energy back to the foot to deliver all-day support and comfort. CarbonShield Technology: Engineered with nanotechnology, adds strength and unmatched protection, provides a better fit and reduces weight. Lightweight, non-metallic, asymmetrical-shaped toe cap. Waterproof Membrane: Delivers maximum waterproof protection and blood-borne pathogen resistance. Meets ASTM F1671-07 safety standard. Breathable membrane helps protect from diseases caused by blood-borne pathogens. Meets ASTM F1671-07 safety standard. Puncture-Resistant (Non-Metallic Plate): Flexible non-metallic plate minimizes the likelihood of puncture wounds; Meets US and Canadian safety standards including ASTM F2412-18a, ASTM F2413-18 and ASTM F2892-18 PR puncture resistance. Timberland PRO Rubber: Heat-resistant, durable rubber compound offers enhanced slip, oil and abrasion resistance; Mark II Oily wet #3 on American Olean tile exceeds .40