Corcoran Men。The Corcoran 985 Men\'s Leather Unlined Side Zipper Jump Boots in black, size 9, are designed for workwear occasions with a mid-calf shaft and round toe shape. Made with 100% rubber outsole material and leather upper material, these boots feature slip-resistant and non-slip properties. The lace-up closure and side zipper cover add to the style and functionality of these combat boots, which are USA-made and themed around jump boots and law enforcement. The unlined interior and high lace detail make these boots both durable and comfortable for all seasons.