


Advice : Use the foot sizer from SIDAS to help you find the right size
The Mindbender 90 Alliance are freeride/ free ski touring boots by K2.
Mindbender range :
The Mindbender range has been designed targeting several major points: lightness, liveliness and fit customisation to meet the demands of freeriders, who are more and more fond of wide open spaces and therefore of hiking up to a summit with skis on their backs.
To achieve this, K2 has developed the Powerlite Shell, which is based on the principle of incorporating reinforcements in the sensitive and strategic areas of the boot, while paring back the less essential parts. This seems to be the basic design premise, but it's also a task requiring craftsmanship that the American brand has achieved with the use of 4 different densities of TPU. All this offers a perfect balance between agility, power and lightness, which allows for easy climbs and all the support you expect from a freeride shoe on a descent.
Mindbenders obviously have low-tech inserts for touring bindings, although they are perfectly suited for alpine bindings. They also have a 50° travel giving you an extremely natural walk, whether you're on flat terrain or in a steep area. The GripWalk soles are also perfectly adapted since their curved "rocker" shape allows for easy walking, and the grip is adapted to technical terrain.
In addition to the weight, there are many innovations in the shoes in this range. The Fastfit Instep cushions the top part of the inner boot to make putting it on easy. Struggling to get into your boots on a cold February morning will be a thing of the past!
And as you can never have too much good news, the Powerlite shells and Luxfit Pro Tour integrated liners are totally thermosettable, so you can perfectly customise your boots. A custom fit to cocoon your precious feet! The liners are made from high-quality Ultralon foam and have asymmetrical tongues for a more ergonomic fit.
Mindbender 90 Alliance:
This Alliance 90 version is the model of the women's Mindbender range with a more moderate flex than its big sister 110, which makes it more accessible to light skiers or skiers of a confirmed but not expert level. Above all, it will be a little less firm, for more comfort and ease in a sequence of turns.
The integrated Luxfit Pro Tour liner is thermoformable for the best customization. The average density of the Ultralon foams allows a perfect balance between durability, support and comfort.
Simply put, this Mindbender Alliance 90 is designed for light, intermediate or expert freeride who want innovative, durable and high-performance equipment.


Flex: 90.
Last width : 100 mm
Weight : 3200 g per pair
Powerlite Shell :
Thermoformable shell, based on 4 densities of TPU :
- Powerfuse Spyne: the most rigid collar for holding and transmitting power
- Fastfit Instep: more flexible to make putting the boot on easier
- Shell Body : Medium stiffness of upper shoe for good hold of the foot and shock absorption
- Lower power frame: high rigidity under the shoe for immediate support transfer and optimal torsional resistance
Powerlock Spyne :
50° incline in touring mode, and firm hold in ski mode
Front angle can be adjusted from 10 to 17°
Low-tech inserts integrated into the shell :
Makes these boots compatible with alpine and hiking bindings!
Luxfit Pro Tour Liner
Pre-formed liner made of thermoformable Ultralon foam cells. Includes an asymmetrical tongue, pre-moulded ankle and a cuff made of high density foam for maximum strength comfort.
GripWalk Insoles
Designed on a "rocker" shape to increase grip and comfort when you walk in your boots