Milwaukee Men's Boots with Zip And Laces (Black, Size 11) Oil and Acid Resistant Outsole with Non-Skid and Non-Marking Tread Side Zipper with Plain Toe Design, Welt Construction Side Zipper Entry with Milwaukee Signature Hardware Smart Mask Climate Control Insole with Flex Power Toe Design Linings are Moisture Wicking, Anti-Fungal, Anti-Bacterial