Created with the help of two career Army officers from Fort Lewis, Washington, the USA-made Fort Lewis is FORSCOM approved and loaded with all the features a warrior or law enforcement professional needs. A cushioning Vibram Kletterlift outsole fights fatigue on long marches. Made of a specialized dry ice compound, the outsole remains flexible in extreme cold to aid slip resistance. The full-grain leather upper and GORE-TEX lining keeps the boot waterproof. Danner's famous stitchdown construction gives a more stable platform underfoot and superior durability. Features 200G Thinsulate.