Conquer the mountain with the Burton Ruler Snowboard Boots. A medium flex that finds the balance of progressive riding and forgiving feel for all day comfort and all-mountain versatility. Customizable fit with heat moldable liners and unmatched out-of-the-box comfort, will make sure that riding all day is a breeze. Say goodbye to the days of spending time lacing boots and painful pressure points with the Burton Ruler Snowboard Boots. Flex: 6/10 (Medium) Speed Zone Lacing – Strong with a low-profile, Burton's Speed-Zone Lacing features lightning fast lacing control while allowing you to customize the fit of the upper and lower zone in seconds. More power means more rebound, wrap and response with less lacing effort. Imprint 2 Liner – Burton's Imprint 2 Liner is heat-moldable and includes Lightweight Power Panels, a Level 2 Molded EVA footed, and a Velcro Liner Closure, plus 3M Thinsulate insulation, a Lock-Up Cuff and an Inner Lace Lock and Man Fur. 3M Thinsulate – Mapped synthetic insulation materials that are extremely warm, lightweight, and bulk-free. Inner Lace Lock – Quick‐lock design keeps your heels locked down all day. Exiting’s a cinch with the one‐handed release tab. Lock-Up Cuff – This super low-profile inner cuff caries the laces across the forefoot and ankle for ultimate heel hold with effortless entry and exit.