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K2 Cortex 105 BOA W Women's Ski Boots combine a stiff flex with a narrow fit, providing stability and precision during descents. The ergonomic design and comfortable insole guarantee all-day comfort, while the BOA system facilitates quick and secure boot adjustments.

Basic data

Brand K2
Country of origin of the brand USA
Sport Skiing
Gender Woman
Season Autumn/Winter
Leading colour Green
Model/product code Cortex 105 Boa W 10L2907.1.1
Purpose All mountain, Freeride
Code 2000176480

Product details

Level of sophistication Advanced
Flex (hardness) scale 105
Material Thermoplastic polyurethane (TPU)
Sole GripWalk
Waga jednej sztuki 24.5 cm: 1783 g
Fastening type Buckles, BOA
Technologies GripWalk, BOA® Fit System, Fastfit Instep, MultiFit™ Last, Dual Adjustable Cuff Alignment, EliteFit Sport Liner, Energy Bolt Spine, Ski Edge Sensitivity Shims
Compatibility with bindings GripWalk

Shell

Shell width 96-98 mm
Shell moulding capability No
Calf width adjustment Yes

Inner boot

Inner boot EliteFit Sport
Built-in heating system No
Mouldable inner boot Yes

Fastening

Buckles 2 micro-adjustable buckles, 2 buckles adjustable via BOA system
Velcro Cam Buckle Strap 45 mm

Warnings and producer's data

Producer K2/BCA ELEVATE OUTDOOR COLLECTIVE / Customer Service Export | Seeshaupter Str. 62 , DE 82377 Penzberg | info@k2sports.de

Women's ski boots K2 Cortex 105 Boa W (10L2907.1.1)

Women's ski boots K2 Cortex 105 Boa W have been designed for advanced female skiers who expect the highest quality equipment. Made from thermoplastic polyurethane (TPU), they offer not only durability but also excellent comfort while skiing. Thanks to innovative solutions such as the moulded EliteFit Sport inner boot, users can count on a precise fit to the foot, which translates into effective skiing.

Advanced fitting technologies

The women's ski boots K2 Cortex 105 Boa W stand out thanks to the BOA® Fit System, which allows for quick and precise adjustment of the boot to the foot. This system, combined with micro-adjustable buckles and adjustable BOA buckles, enables individual customisation of the boot, increasing comfort during use. Additionally, the Dual Adjustable Cuff Alignment technology allows for calf width adjustment, which is crucial for ensuring a perfect fit.

Innovative performance solutions

The women's ski boots K2 Cortex 105 Boa W are equipped with a range of technologies that enhance their performance. The GripWalk sole provides excellent grip, which is key for skiers moving across various surfaces. Thanks to the Energy Bolt Spine technology, the boots offer better energy transmission, resulting in a more dynamic ride. It is also worth noting the Fastfit Instep, which makes putting on and taking off the boots easier.

Comfort and functionality

The women's ski boots K2 Cortex 105 Boa W offer exceptional comfort thanks to the EliteFit Sport Liner, which fits the foot perfectly. The 45 mm Cam Buckle Strap further stabilises the foot, which is important during dynamic skiing. Thanks to the Ski Edge Sensitivity Shims technology, skiers can expect better control over their skis, which is essential for precise manoeuvres on the slope.

Women's ski boots K2 Cortex 105 Boa W - features:

  • Made from thermoplastic polyurethane ensuring durability;
  • EliteFit Sport inner boot for a precise fit;
  • BOA® Fit System allowing quick and precise adjustment;
  • Micro-adjustable and BOA buckles for individual customisation;
  • Dual Adjustable Cuff Alignment technology for calf width adjustment;
  • GripWalk sole providing excellent grip;
  • Energy Bolt Spine technology for better energy transmission;
  • Fastfit Instep for easier putting on and taking off;
  • 45 mm Cam Buckle Strap for additional foot stabilisation;
  • Ski Edge Sensitivity Shims technology for better ski control.
GripWalk
A system used in the soles of ski boots to improve walking comfort. The GripWalk soles are fully coated with a high-friction material for grip on any surface. The integrated ribbed tread enables direct and efficient energy transfer to the bindings.
BOA® Fit System
Fitting system, consisting of a strong line, hooks and an adjustable knob. It guarantees a stable and comfortable fit of the product to the shape of the body. The user has the possibility of very precise adjustment.
Fastfit Instep
Quick and convenient midfoot fitting is provided by a system that wraps around the shoe at a key point, stabilizing the foot without the need to overly tighten the entire upper. This facilitates precise fitting, increases comfort, and improves control while riding.
MultiFit™ Last
Thanks to the specially designed shell shape, fitting different foot types becomes much easier. The Multifit™ Last allows for precise fitting for both narrower and wider feet, providing comfort and better control. This universal solution increases comfort without the need for individual molding.
Dual Adjustable Cuff Alignment
The adjustable cuff system allows for precise adjustment of the cuff's tilt angle relative to the shin axis. This makes it easy to correct the boot's alignment to the individual leg structure, resulting in better control and greater riding comfort.
EliteFit Sport Liner
The internal sport liner adapts to the shape of the foot from the very first use, providing precise hold and comfort. Thanks to the use of thermoformable materials, individual adjustment is possible, which increases control and reduces pressure points.
Energy Bolt Spine
The Energy Bolt Spine core reinforces the shoe's construction, providing better energy transfer and greater responsiveness during riding. Thanks to the strategic stiffening of the rear part of the upper, control over the skis is improved, especially during dynamic turns. This solution increases stability without restricting the natural movement of the foot.
Ski Edge Sensitivity Shims
A profiled insert between the binding and the ski improves edge feel and increases steering precision. Slightly modified flexibility allows for better sensing of the ski's response when initiating a turn. This solution provides more intuitive handling, especially during dynamic skiing.
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Size Sizes table
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Sizes table

    Below you will find information that will help you choose the right size when purchasing ski boots from K2. You will only need a tailor’s measuring tape.

    Size (cm) 22.5 23.5 24.5 25.5 26.5 27.5 28.5
    EU size 36 37.5 39 40 41.5 42.5 44
    US M Size 6.5 7.5 8.5 9.5 10.5
    US W Size 5.5 6.5 7.5 8.5 9.5 10.5
    UK size 3.5 4.5 5.5 6.5 7.5 8.5 9.5
    Shell lengh (mm) 264 274 284 294 304 314 324
    AB - Mondopoint (cm) 22.5 23.5 24.5 25.5 26.5 27.5 28.5

    Mondopoint is the length of the foot (measured from the heel to the tip of the big toe).

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