K2 Cortex 105 BOA® Women's Ski Boots 2027

Secure fit, serious performance

$749.99

The ultimate high-performance boot for the hard-charging female skier. The Cortex 105 BOA® W blends precision and comfort like never before, delivering race-boot-level responsiveness without sacrificing all-day wearability. Designed for those who ski bell to bell, this boot keeps you charging while others call it quits. Dial into the Cortex 105 BOA® W and elevate every run.

Best For:

Freeride

Big Mountain

Powder

Speed

TPU Coated Top and Bottom

A rugged TPU (thermoplastic polyurethane) coating on the boot’s top and bottom adds enhanced durability, weather resistance, and structural support. This protective layer helps shield against scuffs, moisture, and impacts—keeping your boots performing and looking sharp season after season.

Liner

EliteFit Sport Liner

This liner blends comfort and performance with a medium-volume fit and supportive ankle pockets. It’s great for intermediate to advanced skiers looking for all-day skiability without sacrificing control.

Outsole

GripWalk Outsoles

Removable and interchangeable ISO 23223 alpine rockered soles collaboratively designed to work with Marker’s Grip Walk binding system for better grip and added comfort when walking and standing in boots, but doesn’t compromise the power transmission and release function between the boot and binding when skiing. Preinstalled.

Features

Fastfit Instep

Softer TPU material is used in the instep area of select models' shells for quick and easy entry and exit.

MultiFit™ Last

BOA® boots with multi-fit last allow for a greater range of foot shapes to fit within the same shell family. Multi last boots are offered in three different volumes, low volume (Cortex) medium (Recon, Anthem and Mindbender) and high (BFC).

Fully Heat-Moldable

Both the boot's shell and cuff are capable of being heat-molded to a variety of foot shapes for a true custom fit.

Closure

BOA® Fit System

The BOA® Fit System delivers dialed in performance and a micro-adjustable precision fit, engineered & guaranteed to perform in the toughest conditions. It consists of three integral parts: a micro-adjustable dial, lightweight yet extremely strong laces and low-friction lace guides, which are applied in uniquely designed configurations to improve the fit and performance of the boot.

Strap

45MM Cam Buckle Strap

A wide cam-style power strap that delivers maximum cuff support and precise closure. Ideal for high-performance boots where stiffness and control are key.

SHELL LENGH (mm)	MONDO POINT	US SIZES - MEN	US SIZES - WOMEN	EU. ADULT	UK ADULT
264	22.5	-	5.5	36	3.5
274	23.5	-	6.5	37.5	4.5
284	24.5	6.5	7.5	39	5.5
294	25.5	7.5	8.5	40	6.5
304	26.5	8.5	9.5	41.5	7.5
314	27.5	9.5	10.5	42.5	8.5
324	28.5	10.5	-	44	9.5

K2 Cortex 105 BOA® Women's Ski Boots 2027

Secure fit, serious performance

$749.99