The Wolverine Fortis Hiking Boot features the Individual Comfort System. This includes an adjustable footbed that allows for customizing the stiffness and tilt of the boot. In addition to the ICS, the boot is waterproof and gore-tex lined. I tested the boot while spending time at our family cabin in Alaska. The boot held up very well for the conditions, and was always comfortable and dry. I was able to walk in four inches of water without getting wet. That's important because on the tundra, once your boots get wet, there a hard to dry out.