S/LAB SHIFT ALPHA BOA®
Unisex · Alpine boots
S/LAB SHIFT ALPHA BOA®
Developed with athletes who demand maximum downhill performance with minimal compromise on the climb, the S/LAB Shift Alpha BOA® delivers power, precision and a fully customized fit. The Freespine ensures direct energy transfer between cuff and shell, while the Exobelt and BOA® Fit System offer micro-adjustable foothold that keeps you locked in.
Article ref. L45415500
- Best for
- All-Mountain
- Level of Practice
- Advanced
- Stiffness
- HardFlex Value: 140
- Width
- Narrow
- Last Value
- 98
- Pads
- GripWalk - Adult (ISO 23223)
- Bindings Compatibility
- GripWalk - Adult (ISO 23223)
- Weight per unit
- 4 lb, 1 oz
Product benefits
Adjustment
- Screwed frictionless pivots
Boot Shell
- Polyurethane: A material with consistent density that ensures perfect wrapping, reliable progressivity and good power transmission.
- Custom Shell™ HD: The Custom Shell™ HD process lets bootfitters personalize to the boot’s lower shell or the shell and cuff, in 10 minutes while thin wall construction and new materials keep the foot closer to the shell
- Exobelt: 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.
- Powerplate: A plate that reinforces the lower shell overlap with an extra-stiff plastic insert, boosting forward flex for stronger, more powerful transmission.
Cuff
- Pebax: Top-quality polyamide plastic which provides adapted rigidity, lightness and downhill performance.
Extra Services
- Full service: The buckles, toothplate, strap & oversized pivot are screwable so dismantling the boot is easy, granting easy access to all parts when bootfitters work on customizing the fit.
Insole
- Sensitive 2 footbed: This pre-shaped footbed enables precise ski steering and foot stability thanks to a dedicated rigid heel insert and performance-driven foam layering.
Liner
- Shift CF Lab: This alpine liner, co-developed with Mountain Collective athletes, features a 4D Talyn® construction for enhanced foothold and precision, along with an elastic toe box for added comfort.
Outsole Type
- Full rubber sole: A high-performance, durable full rubber sole designed for touring ski boots, providing reliable grip and precise control on snow and hard surfaces.
Pads
- GripWalk - Adult (ISO 23223)
Tightening
- 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.
- 2 hiking hook
Strap
- Screwed with claw hook 50mm
Product benefits
Increased downhill performance
Engineered for performance, this ski boot integrates a Powerplate for enhanced forward flex and a PEBAX cuff to deliver lightweight responsiveness on every turn.
Precision and responsiveness
Following Alpha’s fit formula, these boots’ 98 mm last offers a solid yet inclusive fit designed to maximize control and deliver more responsiveness when skiing on wider skis.
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.