Milwaukee Men's Wide Harness Boots with Zip (Black, Size 13) Oil & Acid Resistant Outsole with Non-Skid & Non-Marking Tread Back Zipper with Square Toe Design, Welt Construction Back Zipper Entry W Milwaukee Signature Hardware Smart Mask Climate Control Insole with Flex Power Toe Design Linings are Moisture Wicking, Anti-Fungal, Anti-Bacterial