The Atomic Backland XTD Carbon 120 builds on the platform of the older Atomic Backland but provides carbon loading in key spots to not only cut weight down but to stiffen up the important parts. The stiffer 120 flex index rating provides better turning and downhill abilities, redefining what it means to have a light and fast boot the Atomic Backland XTD Carbon 120 is a killer boot for any backcountry ripping.