Shift Supra S Boa 105 Ski Boots 2026

With the BOA® Fit System for a personalized fit and Exobelt™ Technology for added support, these boots offer a seamless, responsive ride.

Best for:
All-Mountain, Advanced

Stiffness: Hard
Boot width: Medium

1 screwed BOA® Fit System
The BOA® Fit System delivers micro-adjustable, precision fit engineered to perform in the toughest conditions. It also offers superior heel hold and edge-to-edge control.

Increased uphill performance
This redesigned SkiWalk and FreeSpine offer a wide range of motion and progressive alpine flex, while the horizontal closing position prioritizes safety and durability.

Exceptional foothold
The claw strap, Exobelt, and BOA® Fit System keep your foot close to the shell, ensuring increased stability, minimal heel movement, and efficient power transfer.

BOOT SHELL
Polyurethane: A material with consistent density that ensures perfect wrapping, reliable progressivity and good power transmission.
Integrated tech inserts: Low-tech inserts are integrated into the shell, making it complementary to touring bindings, so you can experience reliability and direct power transmission when skinning up.
Midgrip sole: A Contagrip® piece between the toe and heel and GripWalk pads improve the boot's grip in difficult terrain such as a rocky summits, ice and other uneven surfaces.
Custom Shell™ HD: The Custom Shell™ HD process brings fast personalization to the boot lower shell of in 10 minutes. Thin wall construction & new materials allow the foot to be closer to the shell.
Exobelt: Combining a strong textile/plastic fastener and BOA® Fit System, the Exobelt offers great heel hold and blister-prevention during ascents and precision and power during descents.

CUFF
Polyolefin: More durable material, also providing lightness and stability.
Frictionless pivots: Polymer bushings provide a completely natural cuff rotation for effortless movements on the way up.
Freespine: This extremely sturdy plastic bar on the back of the boot links the cuff and lower shell to add a layer of reliable alpine progressivity to your freeride comfort.
Twinlock mechanism: This redesigned SkiWalk and FreeSpine offer a wide range of motion and progressive alpine flex, while the horizontal closing position prioritizes safety and durability.
PowerWedge: A little insert into the FreeSpine, the PowerWedge enhances your range of motion when unlocked and boosts power transmission when locked for an authentic alpine experience.
Women cuff design: An anatomic cuff with lower rear support that offers a better fit and more comfort to women’s calves.

LINER
My Custom Fit™ Freeride 4D Pro: This pre-shaped liner offers an increased foothold and fit. Cushier foams and outside placement of the Talyn® ease adaptation, while the elastic toe box gives more space.

STRAP
Riveted velcro 45mm

PADS
Gripwalk premounted ISO 23223: GripWalk pads are premounted and their specific shape offers improved walking comfort and more grip no matter the conditions.

TIGHTENING
1 hiking hook: An additional hook on the top cuff's buckle expands the range of motion and mobility of the boot when it’s in hike mode, improving your comfort when heading up towards a peak.
2 screwed aluminium: Two screwable buckles that are easy to remove for bootfitting and repair purposes.
1 screwed BOA® Fit System: The BOA® Fit System delivers micro-adjustable, precision fit engineered to perform in the toughest conditions. It also offers superior heel hold and edge-to-edge control.

ADJUSTMENT
Screwed frictionless pivots

LINER CONSTRUCTION
Walk function
Lace loops

INSOLE
Light² footbed: Slightly shaped, lightweight footbed made of special, lighter foams.