Filson's warmest pants--thick, heavy, and durable. You won't find a warmer pair of pants. The natural insulating qualities of these 24-oz. 100% virgin Mackinaw Wool Pants provide the comfort and protection you need while battling extreme cold. Features a brass zipper fly and heavy-duty suspender buttons, 2 field flap side pockets, 2 front slash pockets, and 2 back flap pockets. Seven belt loops accommodate belts up to 1-1/2". Unhemmed. Made in USA.