Scarpa Alien 1.0 W Alpine Touring Boot Ski Boots - Touring Boots - Race Scarpa
Scarpa Alien 1.0 W Alpine Touring Boot Ski Boots - Touring Boots - Race Scarpa
Scarpa Alien 1.0 W Alpine Touring Boot Ski Boots - Touring Boots - Race Scarpa
Scarpa Alien 1.0 W Alpine Touring Boot Ski Boots - Touring Boots - Race Scarpa
Scarpa Alien 1.0 W Alpine Touring Boot Ski Boots - Touring Boots - Race Scarpa
Scarpa Alien 1.0 W Alpine Touring Boot Ski Boots - Touring Boots - Race Scarpa

Scarpa Alien 1.0 W Alpine Touring Boot

$1,500.00
Size
2 in stock
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Boot Fitters Advice
Description

The Scarpa Alien 1.0 W is a 748 g (size 26) women's carbon skimo race boot with a 99 mm last, carbon cuff, 75-degree range of motion and one-throw transitions, built for racing on pin-tech bindings.
Tech Specs
Features

  • Flex: 100 (Scarpa). A stiff race-boot flex from the carbon cuff, not an alpine 100.
  • Weight: 748 g per boot (size 26); 726 g at size 25.
  • Last: 99 mm, a narrow, medium-volume race fit.
  • Walk Mode: Single-throw Speed Lock Lite lever with 75 degrees of range of motion.
  • Shell: Carbon Grilamid LFT lower with a carbon fiber cuff.
  • Liner: Intuition Cross Fit BT, heat-moldable, with an integrated gaiter.
  • Sole: Minimal Vibram UFO race sole with certified tech inserts, pin-tech only.
  • Closure: Cord and BOA, no ladder buckles.
  • Forward Lean: 9 and 13 degrees.
View details

Women's Elite Carbon Skimo Race Boot

Scarpa Alien 1.0 W Alpine Touring Boot

The Scarpa Alien 1.0 W Alpine Touring Boot is a 748 g (size 26) women's carbon skimo race boot with a 99 mm last, a Scarpa-rated 100 race flex, and a minimal Vibram UFO race sole that meets no ISO norm, built for competitive racing and fast ski mountaineering. A Carbon Grilamid LFT lower, a carbon cuff, a cord-and-BOA closure and a 75-degree range of motion pair a frictionless stride with race-first stiffness.

Expert Fit Review Fit profile and recommendations reviewed by CCBB bootfitters.

Is This the Right Boot for You?

Best For
Women skimo racers and fast-and-light ski mountaineers with narrow, medium-volume feet who want the lightest carbon boot that still skis with authority, on race and touring skis 65 to 90 mm underfoot with pin-tech bindings.
Consider Another Boot If
You want a warmer or higher-volume boot, need frame, MNC or alpine binding compatibility, plan to drive wide skis, or prefer a punchable shell, since the carbon lower cannot be modified much.

CCBB Boot Ratings

Uphill Efficiency
5/5
75 ROM at 748 g
Downhill Performance
4/5
Carbon cuff stiffness
Walking Comfort
5/5
Near-frictionless stride
Transition Speed
5/5
Single-throw lever

Rating scale: 5 = top of its class, 4 = excellent, 3 = good, 2 = specialized or below average, and 1 = limited.

CCBB Fit Profile

Overall VolumeMedium
Toe BoxNarrow
Forefoot VolumeNarrow
Instep HeightMedium
Heel HoldGood
Ankle HoldGood
PunchabilityLimited (carbon shell)
Heat MoldableYes

Why We Like It

  • At 748 g per boot (size 26), the Alien 1.0 W is among the lightest women's boots that can still drive a real ski.
  • A carbon cuff wraps the leg for lateral support and edge control that skis stiffer than the weight suggests.
  • The 75-degree range of motion and single-throw Speed Lock Lite lever give a near-frictionless stride and instant transitions.
  • A Carbon Grilamid LFT lower resists spreading open, so the Alien 1.0 W skis with authority on race and light touring skis.
  • The internal cord-and-BOA closure sets fit cleanly and resists snagging on branches or edges.
  • The Intuition Cross Fit BT liner and integrated gaiter add warmth and weather protection over a bare race boot.

Best Uses

  • Skimo racing and competition
  • Fast ski mountaineering and traverses
  • Big-vertical training days
  • Race and touring skis 65 to 90 mm underfoot
  • Women racers with narrow, medium-volume feet

Bootfitter's Advice

The Scarpa Alien 1.0 W fits as a narrow, medium-volume race boot on a 99 mm last with a medium instep and a secure heel. Skimo Co reports the women's version differs from the unisex Alien 1.0 only in color and smaller size run, so the fit through the foot matches the unisex boot. We size close to true Mondo in full sizes only.

The carbon lower does not punch well, so confirm the shell fit before buying and tune with the moldable Intuition liner, heel shims and a footbed. The women's boot runs to size 27, so skiers who need a larger shell should look at the unisex Alien 1.0.

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
748 g per boot (size 26). 726 g at size 25.
Last
99 mm
Flex
100 (Scarpa). A race-boot flex from the carbon cuff, not directly comparable to an alpine flex index.
Range of Motion
75 degrees
Shell
Carbon Grilamid LFT lower
Cuff
Carbon fiber

Features and Compatibility

Walk Mode
Single-throw Speed Lock Lite lever
Closure
Cord and BOA
Binding Compatibility
Pin-tech (low-tech) race and touring bindings only. The minimal Vibram UFO race sole meets no ISO norm, so the Alien 1.0 W is not compatible with frame, MNC, or alpine bindings.
Sole
Minimal Vibram UFO race sole (meets no ISO norm) with certified tech inserts
Forward Lean
9, 13 degrees
Liner
Intuition Cross Fit BT, heat-moldable

Compare the Scarpa Alien 1.0 W

Alien 1.0 W vs. Scarpa Alien 1.0

Skimo Co reports the women's Alien 1.0 differs from the unisex version only in color and its smaller size run, sharing the carbon construction, 99 mm last and 75-degree range of motion. Choose the women's for sizes up to 27 in the women's colorway; choose the unisex for larger shells.

Shop Scarpa Alien 1.0 boots

Alien 1.0 W vs. Scarpa Alien

The standard Alien uses a non-carbon Grilamid cuff and a fuller liner, coming in heavier at a fraction of the price. The Alien 1.0 W adds a carbon cuff for more stiffness and a 75-degree range of motion, making it the choice for racers who want the lightest, stiffest option.

Shop Scarpa Alien boots

Alien 1.0 W vs. Scarpa F1 LT W

The F1 LT W is a heavier women's race-plus touring boot at 915 g with a BOA forefoot and a wall-like flex for skis up to 100 mm. The Alien 1.0 W is lighter, walks with more range and transitions in one throw, but is a dedicated race boot better suited to skinnier skis.

Shop Scarpa F1 LT W boots

Common Questions

Who should buy the Scarpa Alien 1.0 W?
The Scarpa Alien 1.0 W suits women skimo racers and fast-and-light ski mountaineers with narrow, medium-volume feet who want the lightest carbon boot that still skis with authority, on skis 65 to 90 mm underfoot with pin-tech bindings.
How is the Alien 1.0 W different from the unisex Alien 1.0?
According to Skimo Co, the women's Alien 1.0 differs from the unisex version only in color and its smaller size run. It shares the carbon lower and cuff, the 99 mm last, the 75-degree range of motion and the Vibram UFO race sole, so the fit and performance match the unisex boot.
Is the Scarpa Alien 1.0 W really a 100 flex?
Scarpa lists the Alien 1.0 W at a 100 flex, but that is a race-boot figure from the carbon cuff and is not comparable to an alpine 100. We find it skis very stiff and supportive for its weight, though the flex is firm rather than progressive, which is normal for a carbon race boot.
What bindings does the Scarpa Alien 1.0 W work with?
The Scarpa Alien 1.0 W is pin-tech only. Its minimal Vibram UFO race sole meets no ISO norm, so it works only with pin-tech (low-tech) race or touring bindings and is not safe in frame, MNC, or ISO 5355 alpine bindings. The certified tech inserts are required for pin bindings.
Can the Scarpa Alien 1.0 W be punched?
Only minimally. The carbon lower is fragile and resistant to being moved, and Scarpa does not recommend punching it, so fit tuning relies on the moldable Intuition liner, heel shims and a footbed. Confirm the shell fit before buying, especially through the forefoot.
How does the Scarpa Alien 1.0 W sizing run?
The Alien 1.0 W runs close to true Mondo length in full sizes only and tops out at size 27. Women who need a larger shell should look at the unisex Alien 1.0. Confirm fit with a shell check rather than a street-shoe conversion.
Is the Scarpa Alien 1.0 W warm enough for cold days?
For a race boot, yes. The Intuition Cross Fit BT liner and the integrated gaiter add warmth and keep snow out better than a bare race boot, though skiers with cold feet on long, low-output days may still want an overboot.
Is the transition really one step?
Yes. The single-throw Speed Lock Lite lever flips between walk and ski in one motion and self-aligns as you stand up, saving seconds at the top of a climb where a race is won or lost.

Our Verdict

The Scarpa Alien 1.0 W brings the elite carbon Alien 1.0 to a women's size run, skiing better than its 748 g suggests. The carbon cuff and Carbon Grilamid LFT lower give real edge control, the 75-degree range of motion and one-throw lever make it fast in transitions, and the integrated gaiter adds warmth. It fits a narrow, medium-volume foot, barely punches, and is strictly pin-tech.