The 7 inch Ridgeline-Lo GTX Insulated Waterproof boot from Wolverine features waterproof nubuck leather and Cordura upper. GORE-TEX waterproof membrane lining. 600 gram Thinsulate Ultra Insulation. Removable full-cushion insole. Compression molded EVA midsole with fabric wrap. Wolverine rubber lug outsole. Cement construction and nylon shank.