K2 Cortex 120 BOA Men’s Ski Boots. Engineered for advanced to expert skiers, the K2 Cortex 120 BOA® delivers pro-level performance with a dialed-in fit that adapts at the push of a button. Featuring a dual BOA® Fit System (shell + cuff), this boot provides micro-adjustable control for a snug, locked-in feel-no pressure points, no fuss. Built on a low-volume 96-98? Mm MultiFIT last and fitted with a 120 flex TPU shell and cuff, the Cortex 120 balances stiffness with comfort. It’s equipped with the EliteFit Sport liner, FastFIT instep, GripWalk soles, and an Energy Bolt Spine-all working to ensure precision, power, and walkability. Fully heat-moldable and fully customizable, this boot is ready to elevate your all-mountain performance. Dual BOA® Fit System (shell & cuff): micro-adjustable dials allow independent tuning of upper and lower zones for perfect pressure distribution. Low-Volume MultiFIT Shell (96-98? Mm last): precision last for a locked-in fit on narrower feet. EliteFit Sport Liner: heat-moldable, full-lace liner with Ski Edge Sensitivity shims for enhanced edge control. FastFIT Instep & GripWalk Soles: softer TPU instep eases foot entry, while GripWalk soles provide traction off the snow. Energy Bolt Spine & Dual Cuff Alignment: rear cuff support ensures precise forward flex; adjustable alignment tailors stance. Non-Elastic Cam Booster Strap: locks down power with responsive snugness. Closure Type : Strap, Double BOA. Best Use : Snowsports, All Mountain Skiing. # of Buckles : 0.