The OX Nubuck zipper work boot features a tough 8 guage straight zipper and comfort gel insole making them easy to put on and comfortable for all day wear. Made from sand coloured full grain cow leather, these tough work boots have a steel cap and TPU anti scuff protection, along with a steel midsole for all round protection. Padded ankles and nylon mesh inserts make for comfort and breathability. These work boots have a PU Rubber density outsole that is heat resistant up to 300 degrees Celsius.