Salomon S/Pro Supra BOA X90 W vs S/Pro Supra S BOA 95: what is the difference?

The Salomon S/Pro Supra BOA X90 W and the S/Pro Supra S BOA 95 share a 100 mm medium last, BOA closure on the lower shell, and Custom Shell HD. Salomon gives the S BOA 95 a 95 rating, Level Expert, and its S/Pro CF Advanced liner. Retailers list the X90 W at 90 with the My Thermic Fit liner, so it is the softer boot of the two.

What size Salomon S/Pro Supra BOA X90 W should I get?

PTO lists the Salomon S/Pro Supra BOA X90 W in sizes 22/22.5 through 25/25.5 Mondopoint. Its 100 mm last is quoted at shell 26/26.5, so these smaller shells run narrower. We size it by measuring your foot and checking the shell with the liner out.

Is the Salomon S/Pro Supra BOA X90 W good for intermediate skiers?

Yes: three retailers list the Salomon S/Pro Supra BOA X90 W for intermediate to advanced skiers, and its 90 flex is softer than the 95 rating Salomon gives its Supra S BOA 95. A strong or heavier skier who folds a 90 should look at that 95 or the S BOA 105, rated 105, class Hard, on the same 100 mm last.

Salomon S/Pro Supra BOA X90 W vs S/Pro Supra BOA R95 W: which should I pick?

The Salomon S/Pro Supra BOA X90 W has a listed 90 flex, and retailers list Custom Shell HD and a Power Spine for it. The S/Pro Supra BOA R95 W is rated 95 on the same 100 mm last and no R95 W source lists either feature. Both use the My Thermic Fit liner, so pick by flex and by whether your shell may need molding.

Is the Salomon S/Pro Supra BOA X90 W good for wide feet?

The Salomon S/Pro Supra BOA X90 W uses a medium 100 mm last, and one retailer says Custom Shell HD molding can adjust it for wider feet. A foot that needs more than spot molding should start with Salomon's S/Pro Delta BOA 95 on its 102/108 last; narrow feet suit the Alpha C BOA 95 at 98 mm.

What bindings work with the Salomon S/Pro Supra BOA X90 W?

The Salomon S/Pro Supra BOA X90 W comes listed with a GripWalk ISO 23223 sole, so it needs a binding certified for GripWalk soles. A certified technician confirms your binding at fitting, then sets and tests the release.

Alp. Boots S/Pro Supra BOA X90 W GW Blac

On Sale

Salomon

Alp. Boots S/Pro Supra BOA X90 W GW Blac

Item: Salomon S/Pro Supra BOA X90 W
Author: PTO Team

$350.00$500.0030% OFF

Final Sale30% OFF

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Size: 23/23.5

Size guide

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Description

Salomon's women's S/Pro Supra BOA X90 GW is an alpine ski boot for intermediate to advanced skiers, with a BOA dial closing the lower shell and two aluminum buckles on the cuff. Retailers list a 90 flex on a medium 100 mm last, quoted at shell size 26/26.5, and PTO lists Mondopoint 22/22.5 to 25/25.5.

Shell and cuff are polyurethane, and retail listings name Custom Shell HD, Salomon's heat-molding process for bootfitter shell personalization. A metal Power Spine joins cuff and shell, a 35 mm Velcro strap closes the top, and the Women Calf Adjuster adds room at the calf. Inside is Salomon's My Thermic Fit liner.

This boot suits an average-width foot and a skier who wants the dial to wrap the instep and lower shell while the buckles hold the leg. Strong or heavier skiers who need more support than a 90 should try Salomon's Supra S BOA 95 or Supra S BOA 105. It comes in one width: narrow, low-volume feet should look at Salomon's Alpha C BOA 95, and wide feet that shell molding cannot open enough should look at its Delta BOA 95. No walk mode is listed, so plan on it as a lift-served boot.

The sole is GripWalk ISO 23223, which calls for a GripWalk-certified binding. Have a technician confirm yours before the boots go into it.

At PTO we measure your foot, shell-check it with the liner out, and check the boots against your bindings.

Details

Type: Ski Boots
Vendor: Salomon
SKU: L47709101
UPC / GTIN: 195751672771

$350.00$500.0030% OFF

23/23.5

PTO ReviewSki Boots

Salomon S/Pro Supra BOA X90 W

S/Pro Supra family · 24/25BOA

Flex 90

Medium

60708090100110120130

SofterStiffer

Last Width

100mm— Medium (100–101mm)

Salomon's S/Pro Supra BOA X90 W is a 24/25 women's boot, and Salomon's 26/27 dealer catalog lists no X90. Salomon has no consumer spec page for it that we could read, so its numbers come from retailer listings. Two full spec listings agree on the core: a 90 flex, a 100 mm last, BOA on the lower shell, Custom Shell HD and the My Thermic Fit liner.

The X90 W's 100 mm figure is measured on a 26/26.5 shell, and one retailer notes the width moves about 2 mm per full size. Every size PTO lists is below that reference shell, so those shells run under the quoted 100 mm. Inside the S/Pro family the width routing is plain: the Alpha C BOA 95 is Salomon's Narrow 98 mm last and the Delta BOA 95 its Wide 102/108 last. For a foot that is only a little wide in spots, the X90 W's Custom Shell HD is the tool; Salomon describes it as letting a bootfitter personalize the lower shell, or shell and cuff, in 10 minutes.

Set against the Salomon S/Pro Supra S BOA 95, the X90 W shares the 100 mm last, the BOA lower shell and Custom Shell HD. Salomon rates that boot 95, Medium stiffness, Level Expert, and fits its S/Pro CF Advanced liner. The X90 W is rated 90 with My Thermic Fit, which one retailer classes as semi-custom. On the same last, the S BOA 105 is the stiffer step, rated 105, class Hard.

PTO also sells the Salomon S/Pro Supra BOA R95 W, a 95 on a 100 mm last with the same My Thermic Fit liner. On paper the split is the shell: X90 W listings name Custom Shell HD and a Power Spine, and no R95 W source names either.

Retailer data on the X90 W has loose ends. One listing's spec line reads flex 105 while its own text says X90 flex, and two listings tag the 90 Stiff while describing it as a medium flex. Listings also split on screwed or riveted buckles, and the 1,750 g weight carries no size.

PTO's read: a softer, moldable medium-last BOA boot for women skiing groomers.

Strengths

+BOA dial closes the lower shell; two buckles hold the cuff
+Custom Shell HD lets a bootfitter heat-mold the shell
+Metal Power Spine links cuff and shell for back support
+Women Calf Adjuster adds cuff room for different calf shapes

Best For

Intermediate to advanced women with an average-width foot who ski groomers, want a BOA dial on the lower shell and buckles on the cuff, may need a bootfitter to mold the shell, and run GripWalk-certified bindings.

Limitations

−X90 W specs come from retailer listings, not a Salomon page
−My Thermic Fit liner is classed semi-custom by a retailer
−Single medium last: Alpha suits narrow feet, Delta wide feet
−No walk mode or tech fittings listed for the X90 W
−GripWalk soles need a GripWalk-certified binding, checked by a technician

Not For

Narrow, low-volume feet (Salomon's S/Pro Alpha C BOA 95 is the 98 mm last) and wide feet that molding cannot open enough (the S/Pro Delta BOA 95 is the 102/108 last). Strong or heavier skiers who fold a 90, who should look at the S/Pro Supra S BOA 95 or the S BOA 105. Anyone who wants to walk or tour, since no walk mode is listed. And anyone whose bindings are not certified for GripWalk soles; a technician checks that at fitting.

Common Questions

Salomon S/Pro Supra BOA X90 W vs S/Pro Supra S BOA 95: what is the difference?: The Salomon S/Pro Supra BOA X90 W and the S/Pro Supra S BOA 95 share a 100 mm medium last, BOA closure on the lower shell, and Custom Shell HD. Salomon gives the S BOA 95 a 95 rating, Level Expert, and its S/Pro CF Advanced liner. Retailers list the X90 W at 90 with the My Thermic Fit liner, so it is the softer boot of the two.
What size Salomon S/Pro Supra BOA X90 W should I get?: PTO lists the Salomon S/Pro Supra BOA X90 W in sizes 22/22.5 through 25/25.5 Mondopoint. Its 100 mm last is quoted at shell 26/26.5, so these smaller shells run narrower. We size it by measuring your foot and checking the shell with the liner out.
Is the Salomon S/Pro Supra BOA X90 W good for intermediate skiers?: Yes: three retailers list the Salomon S/Pro Supra BOA X90 W for intermediate to advanced skiers, and its 90 flex is softer than the 95 rating Salomon gives its Supra S BOA 95. A strong or heavier skier who folds a 90 should look at that 95 or the S BOA 105, rated 105, class Hard, on the same 100 mm last.
Salomon S/Pro Supra BOA X90 W vs S/Pro Supra BOA R95 W: which should I pick?: The Salomon S/Pro Supra BOA X90 W has a listed 90 flex, and retailers list Custom Shell HD and a Power Spine for it. The S/Pro Supra BOA R95 W is rated 95 on the same 100 mm last and no R95 W source lists either feature. Both use the My Thermic Fit liner, so pick by flex and by whether your shell may need molding.
Is the Salomon S/Pro Supra BOA X90 W good for wide feet?: The Salomon S/Pro Supra BOA X90 W uses a medium 100 mm last, and one retailer says Custom Shell HD molding can adjust it for wider feet. A foot that needs more than spot molding should start with Salomon's S/Pro Delta BOA 95 on its 102/108 last; narrow feet suit the Alpha C BOA 95 at 98 mm.
What bindings work with the Salomon S/Pro Supra BOA X90 W?: The Salomon S/Pro Supra BOA X90 W comes listed with a GripWalk ISO 23223 sole, so it needs a binding certified for GripWalk soles. A certified technician confirms your binding at fitting, then sets and tests the release.