Sleek and robust design with a breathable nylon mesh lining. These Caterpillar Threshold Chukka Boots for men in black offer rugged durability and all-day comfort. Made with full-grain leather, they feature a soft, breathable nylon mesh lining and a cushioned foam footbed. The sock lining also has CLEANSPORT NXT pro-biotic odor control. The midsole heel is made of durable and lightweight EVA, and the outsole is durable rubber for traction. Construction is Strobel. Technologies include CLEANSPORT NXT.