Comfortable, Durable Work Boots By Cat. Featuring full grain waterproof leather construction 200 grams of insulation keeps feet warm Caterpillar boots are made for today's hardest working men These CAT work boots feature a genuine waterproof leather foot under a matching, lace-up leather shaft. Extra warmth provided by 200 grams of insulation. Padded collar offers added support and comfort. Nylon mesh lining wicks away moisture. Round steel toe. Imported.