Timberland Pro designed their heavy-duty insulated Boondock manufacturing boots to provide industrial-grade protection from every angle. Starting with their premium Timberland® waterproof leather uppers with internal waterproof, breathable membranes for maximum waterproof protection and resistance to blood-borne pathogens, they added 200 grams of insulation for cold-weather comfort and to retain heat, electrical shock protection, molded Timberland PRO® rubber toe protectors that are as thick as standard boot outsoles and backed with composite safety toes, rigid external heel cups to support lateral movement, and Anti-Fatigue Technology footbeds for all-day shock absorption and energy return. Their breathable, moisture-wicking linings are made of ReBOTL™ fabric containing at least 50% recycled plastic with an antimicrobial treatment for odor control. You'll also find lightweight protection from below with non-metallic, puncture-resistant plates and their heat-, slip-, oil-, and abrasion-resistant, non-marking All-Weather TPU outsoles that offer enhanced traction in extreme environments.