Men's Caterpillar, Second Shift Work Boot. This durable work boot style will keep your feet protected and comfortable on the job. The slip-resistant design will keep you safer at work. Full grain leather uppers with breathable nylon mesh liningsLace up closureClimasphere breathable insole keeps your foot comfortableSteel shank for added stabilityT3 Rubber Outsole delivers slip resistance for optimal tractionSlip-Resistant outsole for grip on low traction surfaces