K2 Flex Revolver Ski Boots 2023K2 Revolver 90 boots from the former Full Tilt line up. Last width = 99 Flex index = 90 Three piece construction and design is perfect for the young freerider, looking to spend time in the park, bumps, trees, jumps, or anywhere else. Flex 90 outside tongue offers a very lively, playful feel. Shell is fully customizable, as is the Intuition conventional "tongue" design liner. This boot is an outstanding value, and skis incredibly well. Micro adjustable