Shift Alpha Boa 115 W Ski Boots 2025

The FreeSpine™ connects the cuff and shell for more power and control, while the EXOBELT™ and BOA® Fit System deliver micro-adjustable, precision fit engineered to perform in the toughest conditions.

Best for
All-Mountain
Advanced
Narrow feet

Precision and Responsiveness
Following Alpha's fit formula, these boots' 98 last ensures a solid yet inclusive fit designed to maximize controll and deliver more responsiveness when skiiing on wider skis.

Increased Uphill Performance
These light boots feature a new TwinLock system with a 55-degree range of motion and GripWalk soles for more comfort and secure compatibility with bindings on the market.

Exceptional Foothold
The Energyzer strap, EXOBELT, and BOA Fit System work together to keep your boots close, ensuring increasewd stability, minimal heel movement, and efficient ppwer transfer.

Article ref.
L47656100

Weight
1650g

The pair: 3300g

SHELL - Polyurethane: A material with consistent density that ensures perfect wrapping, reliable progressivity and good power transmission.

SHELL - 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.

SHELL - 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.

SHELL - 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.

SHELL - BOA® Fit System: The BOA® Fit System delivers a micro-adjustable, precision fit engineered to perform in the toughest conditions.

SHELL - Exobelt technology: The strong textile/plastic fastener and BOA® Fit System brings remarkable heel hold and prevents blisters during ascents, while ensuring precision and power during descents.

CUFF - Frictionless pivots: Polymer bushings provide a completely natural cuff rotation for effortless movements on the way up.

CUFF - 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.

CUFF - 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.

CUFF - 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.

CUFF: Polyolefin + PEX

LINER - Custom tongue: Fully dismantlable and entirely customizable tongue that allows for perfect instep height adaptation. You can add foams or remove materials where it's needed (+/-8mm).

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

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.

LINER: Walk function

LINER: Lace loops

STRAP - Screwed energyzer velcro 45mm: This easy to remove 45 mm thick strap holds the lower leg securely in place and optimizes power transmission, while an elastic section enhances rebound and progressiveness.

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

PADS: Full rubber sole

SPECIFIC - Women cuff design: An anatomic cuff with lower rear support that offers a better fit and more comfort to women’s calves.

TIGHTENING - 2 screwed aluminium: Two screwable buckles that are easy to remove for bootfitting and repair purposes.

TIGHTENING: 2 hiking hook