Men's Caterpillar Steel Toe Leather Boots. Gear up for work with the Caterpillar Colt Pull-On Steel Toe work boot! An ultra-durable (and handsome!) full-grain upper combines with steel toe construction, slip-resistant outsole and a cushioned insole to give you a pair of work boots that promise to keep you protected. With a work boot that looks this good, you'll want to wear the Caterpillar Colt Pull-On Steel Toe work boot on or off the job!