Pros & Cons

• Double BOA closure system for perfect lockdown

  Micro-adjustment at the top and bottom ensures a snug fit and optimal control.
• Narrow last for direct transmission and precision

  At 97mm, the shoe offers a race-inspired fit that wraps your foot like a second skin.
• Powerful stiffness for maximum control at high speed

  The firm flex of 140 provides great response and stability, ideal for aggressive skiers.
• Comfortable and adjustable Elite Fit liner

  The liner conforms to your foot and remains comfortable during long days on challenging terrain.
• Slightly heavier design, less suitable for lightweight favorites

  Due to the cushioned design, this boot weighs slightly more than average models.
• Low-volume fit not suitable for wider feet

  This narrow last is less comfortable for those with wide or high feet has.

Description

The K2 Cortex 140 Zonal Boa 2026 Winter is a powerful ski boot for advanced to expert skiers who demand maximum control and precision. The dual BOA system ensures a secure fit, while the stiff 140 flex offers optimal response at high speed. With a narrow last and a comfortable, adjustable liner, this model is perfect for those who want to get the most out of every descent.

Features

Target group: This ski boot is designed for aggressive, advanced to expert skiers who appreciate powerful control and precise transmission. Ideal for skiers who explore both fast pistes and challenging terrain off-piste.

Last width and instep height: The boot has a narrow 97mm last width and a low-volume fit, which provides a snug fit suitable for slim feet. This offers a direct response but may be less comfortable for wider feet or high instep heights.

Why choose the K2 Cortex 140 Zonal Boa 2026 Winter?

Choose the K2 Cortex 140 Zonal Boa 2026 Winter if you're looking for a very stiff, high-performance pair of ski boots with an unparalleled fit thanks to the dual BOA closure system. The snug, race-inspired last combines with an adjustable liner for comfort on long days. Perfect for advanced skiers who demand precision and control, both on-piste and in rough freeride conditions. At Duijvestein Winterstore, you'll find this top-of-the-line K2 model with expert advice and excellent service.

Fit and sizing advice

In all our shops, we have equipment that allows us to create a 3D scan of your feet. This allows us to determine exactly what size you need, but also to assess whether this model is the most suitable for your foot shape. We also offer various types of insoles that, fully tailored to your foot shape, further optimize the comfort of the ski boot. Therefore, we recommend visiting one of our shops before purchasing ski boots.