Men's Timberland Pro Powertrain ESD Work Shoes Our Timberland PRO® Powertrain ESD athletic work shoes offer lightweight performance, but they're all business when it comes to protection. Not only are their mutilation-free, premium polyester uppers tough enough to handle working on your feet all day, these sneakers feature alloy safety toes and are designed for Electro Static Dissipating (ESD) compliance to minimize hazards from static electricity buildup. Their breathable, moisture-wicking linings are made of ReBOTL™ fabric containing at least 50% recycled plastic with an antimicrobial treatment for odor control. Plus, their proprietary outsoles are constructed of heat-, oil-, slip-, and abrasion-resistant, non-marking polyurethane for enhanced traction and built-in Anti-Fatigue Technology for shock absorption and energy return.