Comfortable nubuck & mesh uppers. Breathable mesh linings. Cushioned midsoles. Steel toe rated ASTM F2413-05, Class 75 - the best available impact & compression strength. Excellent water- & heat-resistant T243 outsole. Electrical hazard protection. The Caterpillar Diffuse combines the style and comfort of a dress shoe with the strength and durability of a work boot. Cemented construction.