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Salomon S/Pro Supra Dual BOA 120 ski boot in Roasted Cashew and Black, lateral view showing dual BOA dials and power strap

Salomon S/Pro Supra Dual BOA 120

Extra-stiff all-mountain boot with dual BOA dials for precise fit and custom-mouldable shell. Built for advanced skiers seeking responsive edge control and all-day comfort.

£570.00
Size (Mondopoint)

Ski boot sizes

Ski boots are sized in Mondopoint — the length of your foot in centimetres. Measure rather than guess: shoe sizes vary by brand, feet don't.

Your Mondopoint from your foot length
MondopointFoot length
2221.6–22 cm
22.522.1–22.5 cm
2322.6–23 cm
23.523.1–23.5 cm
2423.6–24 cm
24.524.1–24.5 cm
2524.6–25 cm
25.525.1–25.5 cm
2625.6–26 cm
26.526.1–26.5 cm
2726.6–27 cm
27.527.1–27.5 cm
2827.6–28 cm
28.528.1–28.5 cm
2928.6–29 cm
29.529.1–29.5 cm
3029.6–30 cm
30.530.1–30.5 cm
3130.6–31 cm
  • Stand on paper, heel against a wall, in a thin sock. Mark your longest toe and measure — do both feet and use the bigger one.
  • Between sizes? Go for the larger. A fitter can take up space in a boot, but can't make a short one longer.
  • Brands and lasts vary. Walk in and a fitter will check your foot in the shell — no appointment needed.
Work out your size, width and flex with the boot finder

Last one in some sizes — marked with a dot

  • Free delivery over £50, or collect from the shop
  • Each size is a single item — we check it's on the shelf before we send it
  • Your card is only charged when your order is sent
  • Returns within 28 days if it isn't right

Get the size right

Boots are the one thing not to buy on numbers alone. Use the boot finder to check your size and width, then come in — we'll fit them properly.

At a glance

Flex
120
Last width at 26.5
100 mm
Weight per boot at 26.5
1870 g
Fit
Unisex

About the Salomon S/Pro Supra Dual BOA 120

The S/Pro Supra is a performance all-mountain boot that brings responsive energy transfer and precise control through Salomon's advanced closure and shell technology. Its dual BOA Fit System dials—one for the cuff, one for the shell—let you dial in pressure exactly where you need it, while the 45 mm power strap locks everything down. The polyurethane shell is heat-mouldable over 10 minutes, and the Custom Shell HD process lets you personalise the fit.

Why we rate it

The 120 flex is genuinely stiff—made for skiers with the technique to use it. The Power Spine metal insert connects shell and cuff, giving you crisp feedback through the ski and progressive rebound on every turn. The Exowrap construction fully integrates both BOA cables so pressure spreads evenly across the boot; there's no binding or pressure points. On snow, it feels locked and responsive, transferring energy without delay.

The My Exowrap 4D Perf liner is the standout fit tool: it's fully removable, with a custom tongue that adjusts ±8 mm for instep height, and an elastic belt around the forefoot that lets you customize how the boot wraps your foot. The Light² footbed is lightweight and slightly shaped.

Who it's for

Advanced skiers (ability 4) who ski anything and want a performance boot. The 100 mm last width and medium volume suit an average to medium foot. There's no walk mode, so it's not for touring, but the GripWalk sole is standard and works with MN bindings. The 12° forward lean is moderate and feels natural through the range.

Key features

  • Dual BOA Fit System — Independent dials for cuff and shell pressure, fully customizable to your foot
  • Heat-mouldable shell — 10-minute custom mould process shapes the polyurethane to your specific foot
  • Power Spine — Metal reinforcement linking cuff and shell for precise feedback and progressive rebound
  • My Exowrap 4D Perf liner — Removable, customizable tongue (±8 mm instep adjustment) with forefoot wrapping belt
  • Exowrap construction — Fully integrated BOA cables eliminate binding points and spread pressure evenly
  • GripWalk sole — Replaceable, premounted; compatible with MN bindings

Fit and feel

100 mm last width (at Mondopoint 26.5), medium volume. The boot wraps firmly but not aggressively; the custom liner and adjustable tongue let you fine-tune volume around your instep and forefoot. The 120 flex is extra stiff and demands technique—it rewards aggression with snappy response but won't feel forgiving if you're not driving it hard.

Specification

Flex120
Last width at 26.5100 mm
Last volumeMedium
Weight per boot at 26.51870 g
Pair weight3740 g
Forward lean12°
ShellHeat-mouldable polyurethane
SoleGripWalk, replaceable
ClosureDual BOA + 45 mm power strap
LinerMy Exowrap 4D Perf, removable
FitUnisex
Season2025/26
Boot typePerformance
Last width100 mm
InstepMedium
Calf adjustmentSome
Mouldable shellYes
Mouldable linerYes
Walk modeNo
Weight1870 g
The boot room: ski boots on the wall and the Salomon fitting bench

Skee-Tex · The Old Mill, Battlesbridge

Try them on in the fitting room

Walk in and a fitter will measure both feet, check the shell and get the fit right — no appointment.

About boot fitting

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