100-Flex Women's Ski Mountaineering Boot
Scarpa F1 XT W Touring Boot
Women chasing vertical who still want to ski the line properly at the top are who the Scarpa F1 XT W is built for. A 100 flex on a 100 mm last handles an 85 mm ski on all snow conditions better than the number suggests, thanks to a Carbon Grilamid LFT cuff. At 1,035 g per boot the Scarpa F1 XT W is squarely in fast-and-light territory.
Expert Fit Review Fit profile and recommendations reviewed by CCBB bootfitters.
Is This the Right Boot for You?
Best For
Women ski mountaineers on low-volume feet running pin bindings and skis 80 to 95 mm underfoot, where the climb decides the day.
Consider Another Boot If
You need any binding other than pin/tech, want a stiffer shell for wide skis, or have a wide forefoot or high instep.
CCBB Boot Ratings
Uphill Efficiency
1,035 g per boot at size 25
Downhill Performance
100 flex on an ultralight shell
Walking Comfort
Low-friction Speed Lock cuff
Transition Speed
Single-lever Speed Lock
Rating scale: 5 = top of its class, 4 = excellent, 3 = good, 2 = specialized or below average, and 1 = limited.
CCBB Fit Profile
Overall VolumeLow
Toe BoxMedium
Forefoot VolumeLow
Instep HeightLow
Heel HoldGood
Ankle HoldGood
PunchabilityModerate
Heat MoldableYes
Why We Like It
- At 1,035 g per boot this is one of the lightest shells a skier can still drive a real touring ski with.
- A women's-specific Intuition Cross Fit Tour LT liner is the substantive difference from the men's build, and it changes heel hold more than a spec sheet suggests.
- Two buckles and the Wave LT cable spread pressure across the forefoot without the hot spots a single strap creates.
- A Lambda frame molded into the Grilamid Fiber Glass LFT shell, a glass-reinforced nylon, adds torsional stiffness without added mass.
Best Uses
- Ski mountaineering and spring couloirs
- Long tours and multi-day traverses
- Skis 80 to 95 mm underfoot
- Skimo training and recreational racing
- Women running pin bindings exclusively
Bootfitter's Advice
The Scarpa F1 XT W shares its shell, cuff, closure and sole with the men's Scarpa F1 XT. What changes is the liner, the weight and the size run: 23 to 27 in whole Mondo sizes only. A half-size foot needs a shell fit to decide direction.
A Grilamid Fiber Glass LFT shell, a glass-reinforced nylon, resists punching more than plain Grilamid because the glass fibre holds its shape. Small corrections are realistic; large ones are not. Mold the Intuition Cross Fit Tour LT Women's liner, a heat-moldable foam liner, before judging the fit.
Fit profile reviewed by CCBB bootfitters. Final sizing should be confirmed with a shell fit whenever possible.
📏 Technical Specifications Manufacturer specs · Click to expand
Fit and Construction
Weight: 1,035 g per boot (size 25)
Last: 100 mm
Flex: 100
Shell: Grilamid Fiber Glass LFT, a glass-reinforced nylon
Cuff: Carbon Grilamid LFT, a carbon-reinforced nylon
Tongue: Synthetic, with an Overlap Shield Tech gaiter
Features and Compatibility
Walk Mode: Speed Lock ski/walk mechanism
Range of Motion: 72 degrees
Closure: Two buckles with a Wave LT closure and a Power Strap Light
Binding Compatibility: Pin/tech (low-tech) bindings only. The Vibram UFO LT outsole meets no ISO sole norm, so the F1 XT W is not compatible with alpine, AT/frame or MNC bindings. Optimized Touring Pivot: mount the tech toe 1 mm rearward of standard.
Sole: Vibram UFO LT outsole, no ISO sole norm, with tech fittings for pin bindings only
Forward Lean: 11, 13 and 15 degrees, adjustable 2 degrees either way with the spoiler
Liner: Intuition Cross Fit Tour LT Women's liner, a heat-moldable foam
Compare the Scarpa F1 XT W
F1 XT W vs. Scarpa F1 XT
The men's Scarpa F1 XT is the same shell, cuff, closure, flex and sole, at 1,145 g per boot with a unisex liner and a 24 to 31 size run. The Scarpa F1 XT W adds a women's liner and covers 23 to 27. Foot length usually settles the choice before anything else does.
Shop Scarpa F1 XT boots
F1 XT W vs. Scarpa Gea RS
Two different jobs. The Scarpa Gea RS is a 125 flex freeride touring boot at 1,405 g per boot with an ISO 9523 sole that also takes frame and MNC bindings. The Scarpa F1 XT W is 370 g lighter, far softer, and pin-only. Choose on how much the descent matters against how far the climb goes.
Shop Scarpa Gea RS boots
F1 XT W vs. Scarpa Alien
The Scarpa Alien is a dedicated skimo race boot, lighter again and softer still. The Scarpa F1 XT W carries enough cuff to ski a real descent afterwards, which a race boot is not built to do.
Shop Scarpa Alien boots
Common Questions
What bindings work with the Scarpa F1 XT W?
Pin/tech (low-tech) bindings only. Scarpa lists the binding system for the Scarpa F1 XT W as TLT, and the Vibram UFO LT outsole meets no ISO sole norm. The Scarpa F1 XT W therefore cannot be used with alpine bindings, frame bindings or MNC bindings. Mount it to a pin binding and nothing else.
Does the Scarpa F1 XT W use a women's-specific shell?
No. Scarpa builds the Scarpa F1 XT W on the shared F1 XT shell and cuff, with the same 100 mm last, closure, flex and sole. What is women's-specific is the Intuition Cross Fit Tour LT Women's liner and the 23 to 27 size run. Skiers expecting a reshaped cuff for a lower calf should know the shell geometry is not changed.
Is there a mounting adjustment for the Scarpa F1 XT W?
Yes. Scarpa specifies an Optimized Touring Pivot of 1 mm, so the tech toe piece mounts 1 mm rearward of the standard position toward the heel. Pass that figure to whoever mounts the binding.
What sizes does the Scarpa F1 XT W come in?
Whole Mondo sizes only, 23 through 27. There are no half sizes in this shell, so a foot that falls between two sizes should be shell-fitted rather than sized by conversion.
How much does the Scarpa F1 XT W weigh?
Scarpa lists 1,035 g per boot at size 25. That places the Scarpa F1 XT W between a skimo race boot and a standard women's touring boot, and 370 g per boot under the Scarpa Gea RS.
What is the range of motion on the Scarpa F1 XT W?
Older F1 material cited 72 degrees, but that belongs to a previous specification. The figure stays open until Scarpa republishes it.
Our Verdict
The Scarpa F1 XT W earns its place for women whose days are measured in vertical.. A 100 flex on a 100 mm last at 1,035 g per boot gives up shell stiffness against a Gea and returns 370 g per boot, and the two-buckle Wave LT closure holds the forefoot more securely than the BOA systems this line used to carry. One constraint governs everything: pin bindings are the only option.
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