The new "S" version ditches the Grilamid cuff for a more progressive one to give a smoother riding feel. The Prolite shell construction slims the boot profile while reducing weight. A snug, 98mm last is paired with a precisely constructed ankle pocket for a secure fitting, that can handle mach speed. If you are an advanced to expert all-mountain, hard-charging skier, the Hawx Ultra 130 S will be the game-changer you've been looking for.