Big-time durability, wider widths, extended sizes. We built Big Rig from the ground up to give you the right foundation. A roomier opening gives you more space to slip them on and off, and the extra durable design is built to withstand harsh outdoor work environments like oil and gas exploration. Features: -ATS® technology provides ergonomic support on uneven terrain -DRYShield™ waterproof breathable construction -Removable Energy Max™ anti-fatigue insole for maximum comfort -FLX Foam™ midsole has a light springy feel that cushions each step -Oil- and slip-resistant Duratread™ sole provides maximum wear resistance -Flared sole design with debris-release tread -Protective ExGuard™ on heel -Goodyear welt construction -ASTM F2892 EH rated