2025 Salomon S/PRO ALPHA 120 EXPERT

Entirely customizable and with a fully dismantlable tongue, this 98 mm boot with elastic Energizer strap offers more progressivity at every turn.

Developed so you can enjoy incredible performance and fit no matter the shape of your feet, Salomon’s S/PRO ALPHA 120 delivers a strong heel lock without adding unnecessary pressure on your instep. Entirely customizable and with a fully dismantlable tongue, this 98 mm boot with elastic Energizer strap offers more progressivity at every turn.

FEATURES & FABRICS
CUFF - Power spine: This metal plate links the cuff and the shell to provide strong back support, progressive rebound out of the turn, and powerful forward flex no matter the snow conditions.
LINER - My CustomFit 4D Race: Pre-shaped Race liner offers improved foothold & snug fit. Cushier foams & outside placement of the Talyn® fabric ease adaptation. The elastic toe box gives more forefoot space.
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).
SHELL - Polyurethane: A material with consistent density that ensures perfect wrapping, reliable progressivity and good power transmission.
SHELL - 3D instep shell: This Shell technology, with its thinner plastic and 45° positioning of the 2nd buckle ensures stronger heel lock and more consistent foothold without unnecessary instep pressure
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.
CUFF - Polyurethane: Material with consistent density that ensures perfect wrapping, progressivity and good power transmission.
CUFF - Custom Shell HD: The Custom Shell HD process lets bootfitters personalize to the boot’s lower shell or cuff in 10 minutes, while thin wall construction and new materials keep the foot closer to it.
LINER - Sensitive² footbed: This pre-shaped footbed enables precise ski steering and foot stability thanks to a dedicated rigid heel insert and performance-driven foam layering.
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.
SPECIFIC - 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.
BUCKLES - 4 screwed aluminium 3D: Choose from 3 different positions of the instep buckle for optimum in-step comfort, full customization and personalized foot hold.
ADJUSTMENT - Screwed cuff alignment pivot: 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.
ADJUSTMENT - 6mm back spoiler in the box: A plastic piece that can be scratched on the back of the boot, between the top of the cuff and the liner, to provide skiers with additional forward lean and more engagement.

PRODUCT DETAILS

Level: Advanced - Expert
Flex: 120
Sizes: 26.5 - 29.5
Last: 99mm @ 26.5

Flex Index

Flex Index is how much effort or work is required to move the cuff of the ski boot forward while the lower shell is stationary; typically retained by the binding. This number can be anything from 50 or 60 to 130+ (or even 1 - 10). There is no standard for this number across the ski boot industry and the ‘Flex Index’ is not based on any metric like newton-meters, foot-pounds, or Pascals. Even within within any given manufacture’s line-up, a boot with a Flex Index of 110 might not be the same as another boot with the same rating. The main thing to remember is that the higher the number, the stiffer the boot. The Flex Index should only be used as just one general factor in choosing a ski boot.
Your style of skiing, experience, level of skiing, terrain, use, height, mass, and personal preference all play a role in helping you pick the stiffness of your boot. A World Cup racer or an advanced/expert skier that prefers making precision turns at high speeds requiring techniques using a lot of tip pressure might need a stiffer boot. On the other hand, someone who hits the slopes every weekend with her family or Patrols three days a week might prefer a more moderate flex.

Last

‘Last’ is a metric that describes the width of your foot at its widest point, which is typically at the forefoot or the ball of your foot. This will be represented in millimeters: i.e: 102mm. This is a critical consideration, because going up a size in a boot will move the widest part of the boot forward while the widest part of your foot will be kept reward. As you can gather, going up a size is not an option.

*For a comprehensive explanation on ski boot fitment, please visit the link below:
Ski Boot Fitting

Alpine

Our Alpine ski boots are designed for maximum control and performance for downhill alpine skiing. These boots will be not be optimal for touring/skinning as the cuff is typically fixed, keeping you in a natural ski position. These boots are designed to work with any Alpine DIN binding. Alpine DIN bindings must be installed, adjusted, and function tested by a certified binding technician.

*If you’re unsure if your boots and bindings are compatible, please have a qualified technician give them a tactile and visual inspection.

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