82501 Obz Men's Bridger 10 Inch Insulated B-DRY This is Obz's warmest, burliest boot, ready for any winter adventure. 400 grams of Thinsulate keep feet warm while a DWR nubuck leather upper with their waterproof B-DRY liner ensures to keep feet dry. Add a TPU Chassis, and the winterized Granite Peak Outsole will keep you on track come snow, ice, or frozen tundra.