Our Highest-Durability Outsole Yet.

4HD™ technology is a lot of things. It’s an innovative, rubber compound that’s cut, abrasion and slip resistant. It’s engineered to retain its durability even with frequent exposure to extremely gritty and abrasive surfaces. It’s also highly resistant to oil and gas absorption. Its sharp lug corners retain their shape longer, prolonging the grip and performance of the outsole. 4HD outsoles are built for safety, built for performance, and built to last.