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Scarpa Alien 1.0 Touring Boot
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Description
The Scarpa Alien 1.0 is a 785 g carbon skimo race boot on a 99 mm last, with a cord and BOA closure, Speedlock Lite transitions and pin/tech bindings only.
Tech Specs
Scarpa Alien 1.0 Touring Boot
Skimo racers and skiers chasing vertical on the clock are who the Scarpa Alien 1.0 is built for. A hand-laid carbon cuff over a Carbon Grilamid LFT shell gives a race boot torsional stiffness that a 785 g shell has no business having. On a 99 mm last with a Dyneema cord and BOA dial rather than buckles, the Scarpa Alien 1.0 transitions in one motion and skis a 75 mm ski with more authority than the weight suggests.
Is This the Right Boot for You?
CCBB Boot Ratings
CCBB Fit Profile
Why We Like It
- At 785 g per boot the Scarpa Alien 1.0 is a true race weight, and the carbon cuff still holds an edge on a firm traverse.
- One motion releases the Dyneema cord and the Speedlock Lite lever together, so a transition takes seconds rather than fumbling with buckles.
- A BOA dial adjusts instep pressure without removing gloves, which matters at a transition in a race or on a cold summit.
- The 99 mm last leaves a touch more room over the instep than a pure race shell, so the snug fit holds the foot without choking circulation on long cold days.
Best Uses
- Skimo racing and training
- Fast ski mountaineering objectives
- Skis 65 to 90 mm underfoot
- Fitness laps and uphill sessions
- Skiers running pin bindings exclusively
Bootfitter's Advice
The Scarpa Alien 1.0 runs a 99 mm last, narrow and low through the forefoot and instep with a snug heel, and comes in whole Mondo sizes only from 24 to 30. Expect a close, even squeeze with little spare room for a thicker sock; wider feet feel it first along the outside of the forefoot. Sizing is decided by shell fit; there is no half-size fallback if a foot lands between two shells.
Carbon Grilamid LFT, a carbon-reinforced nylon, tends to crack rather than stretch when heated, so this shell should be treated as effectively unpunchable. Fit is won with the Intuition Cross Fit BT liner, a heat-moldable foam liner, and with size selection, not with shell work.
Technical Specifications Manufacturer specs · Click to expand
Fit and Construction
Features and Compatibility
Compare the Scarpa Alien 1.0
Alien 1.0 vs. Alien
The Scarpa Alien is the training-and-touring build in the same family, using glass and carbon reinforced Grilamid rather than a full carbon cuff. The Scarpa Alien 1.0 is lighter and stiffer torsionally at a considerably higher price. Racers choose the Scarpa Alien 1.0; skiers wanting race efficiency for fitness laps choose the Scarpa Alien.
Shop Scarpa Alien bootsAlien 1.0 vs. Scarpa Alien 5.0
The Scarpa Alien 5.0 is the full-carbon competition boot, lighter again and built around a carbon shell as well as a carbon cuff. The Scarpa Alien 1.0 keeps a Carbon Grilamid LFT shell for durability and cost. Both are pin-tech only. Scarpa specifies a 7 mm Optimized Touring Pivot for the Alien 1.0 and 5 mm for the Alien 5.0.
Shop Scarpa Alien 5.0 bootsAlien 1.0 vs. Scarpa F1 XT
The Scarpa F1 XT carries 360 g per boot more and a buckle closure, and skis a genuine descent afterwards. The Scarpa Alien 1.0 is a race boot that tours superbly and descends adequately. Both are pin-tech only. Decide on whether the day ends with a race finish or a backcountry descent.
Shop Scarpa F1 XT bootsCommon Questions
What bindings work with the Scarpa Alien 1.0?
How far back does the toe piece mount on the Scarpa Alien 1.0?
Can the Scarpa Alien 1.0 shell be punched?
How much does the Scarpa Alien 1.0 weigh?
Is the 100 flex rating comparable to an alpine boot?
What sizes does the Scarpa Alien 1.0 come in?
Our Verdict
Frequently Asked Questions
What foot shape works best?
Low- to medium-volume feet with a lower instep and secure heel.
Does it punch well?
Minor boot fitting is possible, but race boots are less forgiving to modify than heavier Grilamid touring boots.