Atomic Hawx Ultra 100 Dual BOA Men’s Ski Boots. The Atomic Hawx Ultra 100 Dual BOA® ski boots bring together cutting-edge fit technology and all-mountain performance for skiers who demand comfort without sacrificing control. Built with a lightweight Prolite shell and a narrow 98mm last, these boots are perfect for skiers with lower-volume feet who want responsive performance from first chair to last run. What sets the Ultra 100 apart is the Dual BOA® Fit System, offering independent adjustment zones for the forefoot and instep. This allows for a truly dialed-in fit that adapts to your foot’s shape, boosting comfort, support, and precision on every turn. Combined with Atomic’s heat-moldable Mimic Silver liner, you get a custom feel straight out of the box. Flex: 100 – Balanced for intermediate to advanced skiers. Last: 98mm – Narrow, performance-oriented fit. Dual BOA® Fit System: Independent forefoot and instep fit zones. Mimic Silver Liner: Heat-moldable for tailored comfort. Prolite Construction: Lightweight and strong with strategic reinforcements. Energy Backbone: Reinforced power transfer and edge control. Closure Type : Double BOA. Best Use : Snowsports, All Mountain Skiing. # of Buckles : 0.