Original: $407.28
-65%$407.28
$142.55The Story
Built for aggressive female skiers who refuse to compromise, the K2 Cortex 105 W BOA delivers race-inspired performance with responsive precision. The integrated BOA Fit System enables micro-adjustments on the fly, keeping your foot locked in through demanding turns and variable terrain. A stiffer flex profile translates power directly to your edges while the boot's refined geometry supports extended days without fatigue. Whether you're carving hard lines or pushing technical descents, this boot pairs high-performance responsiveness with the all-day wearability serious skiers demand.
Fit
MultiFIT Last: 96-98 mm – The MultiFit Last was developed in conjunction with the BOA® Fit System to accommodate a variety of narrower foot shapes ranging from 96mm to 98mm.
FastFIT Instep – Softer TPU material is used in the instep area of select models' shells for quick and easy entry and exit.
True LV Fit
Dual Cuff Alignment
Adjustable Rear Cuff Spoiler
Fully Heat Moldable
Flex
Flex: 105 – A stiff flex for advanced to expert skiers.
Liner
EliteFit Sport Liner – Full lace up liner with an adjustable tongue.
Full Lace Up Liner
Ski Edge Sensitivity Shims
Shell Materials & Design
Energy Bolt Spine
Shell – TPU (Thermoplastic Urethane)
Cuff – TPU (Thermoplastic Urethane)
Buckles
BOA® Fit System – The BOA® Fit System provides a performance fit engineered to enhance feel and responsiveness while reducing pressure points by incrementally modulating the Alpine boot closure with precise micro-adjustments.
Power Strap
Non-Elastic Cam Strap - One Piece
Sole
GripWalk ISO 23223 Outsoles – Removable and interchangeable rockered soles designed to work with GripWalk binding systems for better grip and comfort while walking, standing, and hiking.
Specs
-
Ability Level: Intermediate-Advanced
-
Ski Boot Flex: Stiff
- Forefoot Width: 98 mm
- Liner Type: Semi-Custom
- Flex Index: 105
- Boot Sole Type: GripWalk (ISO 23223)
- Includes Tech Fittings: No
- BOA®: No
- Number of Buckles: 2 + BOA Lower Shell
- Series: Cortex
- Warranty: 1 Year
Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Description
Built for aggressive female skiers who refuse to compromise, the K2 Cortex 105 W BOA delivers race-inspired performance with responsive precision. The integrated BOA Fit System enables micro-adjustments on the fly, keeping your foot locked in through demanding turns and variable terrain. A stiffer flex profile translates power directly to your edges while the boot's refined geometry supports extended days without fatigue. Whether you're carving hard lines or pushing technical descents, this boot pairs high-performance responsiveness with the all-day wearability serious skiers demand.
Fit
MultiFIT Last: 96-98 mm – The MultiFit Last was developed in conjunction with the BOA® Fit System to accommodate a variety of narrower foot shapes ranging from 96mm to 98mm.
FastFIT Instep – Softer TPU material is used in the instep area of select models' shells for quick and easy entry and exit.
True LV Fit
Dual Cuff Alignment
Adjustable Rear Cuff Spoiler
Fully Heat Moldable
Flex
Flex: 105 – A stiff flex for advanced to expert skiers.
Liner
EliteFit Sport Liner – Full lace up liner with an adjustable tongue.
Full Lace Up Liner
Ski Edge Sensitivity Shims
Shell Materials & Design
Energy Bolt Spine
Shell – TPU (Thermoplastic Urethane)
Cuff – TPU (Thermoplastic Urethane)
Buckles
BOA® Fit System – The BOA® Fit System provides a performance fit engineered to enhance feel and responsiveness while reducing pressure points by incrementally modulating the Alpine boot closure with precise micro-adjustments.
Power Strap
Non-Elastic Cam Strap - One Piece
Sole
GripWalk ISO 23223 Outsoles – Removable and interchangeable rockered soles designed to work with GripWalk binding systems for better grip and comfort while walking, standing, and hiking.
Specs
-
Ability Level: Intermediate-Advanced
-
Ski Boot Flex: Stiff
- Forefoot Width: 98 mm
- Liner Type: Semi-Custom
- Flex Index: 105
- Boot Sole Type: GripWalk (ISO 23223)
- Includes Tech Fittings: No
- BOA®: No
- Number of Buckles: 2 + BOA Lower Shell
- Series: Cortex
- Warranty: 1 Year
