evo.com | Atomic Alpine Ski Boots > Are two BOA(R)s really better than one? For many skiers, the upper cuff BOA(R) closure offers a smooth and even distribution of pressure and degree of fine tuning that's hard to achieve with a buckle system. If you're in this camp, the new Atomic Hawx Prime 110 Dual BOA Ski Boots are sure to please you. A mid-stiff 110 flex is ideal for all-mountain exploration from groomers to trees, and the 100mm Prime last is one of the most successful in history. Cuff Polyurethane Forward Lean 15deg Last: 100 mm Designed for average width feet with average and slightly taller insteps. 35mm Velcro Strap Flex: 110 A medium-stiff flex for solid power and response. | Atomic Hawx Prime 110 Dual BOA Ski Boots 2027 - 27.5 in Black