K2 2026 Cortex 130 Zonal Boa Men's Ski Boot Size(Mondo):27.5 The A-4 uses the same

The A-4 uses the same super responsive and lightweight highback we've had in the past

The full rubber sole has traction and durability so you don’t slip on ice (or beer)

-BirdsEye Vision™

warm and comfortable

K2 2026 Cortex 130 Zonal Boa Men's Ski Boot Size(Mondo):27.5 The A-4 uses the sameK2 Cortex 130 Zonal BOA Men's Ski Boots 2026 Aggressive performance, effortless control. Your favorite race boots from your glory days just got DJ remixed with your freeride hit list. Developed with an all new, purpose built LV BOA lower shell and a dual zone upper cuff BOA configuration, plus Elite Fit liners, you'll be arcing turns all day long. The all new Cortex Zonal 130 BOA features a high performance LV lower shell and a powerful upper cuff,