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Alien

Regular price $749.00 Sale price $224.70
70% OFF
Color: Carbon

Color
Size: 24

Size

size

Footwear & Apparel Size Charts

Footwear & Apparel Size Charts

For the most accurate fit, measure your foot in centimeters and cross-reference it with the chart before ordering. Shoes ship in US sizes.

Men's Shoe Size Chart
US UK EU CM
4 3 37 22
4.5 3.5 37.5 22.5
5 4 38 23
5.5 4.5 38.5 23.5
6 5 39 24
6.5 5.5 39.5 24.5
7 6 40 25
7.5 6.5 40.5 25.5
8 7 41 26
8.5 7.5 42 26.5
9 8 42.5 27
9.5 8.5 43 27.5
10 9 44 28
10.5 9.5 44.5 28.5
11 10 45 29
11.5 10.5 46 29.5
12 11 46.5 30
12.5 11.5 47 30.5
13 12 48 31
14 13 49 32
15 14 50 33
16 15 51.5 34
Use the CM column as your most reliable guide. Add about 1 cm of room at the front for natural foot expansion while running.
Women's Shoe Size Chart
US UK EU CM
4 2 34.5 20.5
4.5 2.5 35 21
5 3 35.5 21.5
5.5 3.5 36 22
6 4 37 22.5
6.5 4.5 37.5 23
7 5 38 23.5
7.5 5.5 38.5 24
8 6 39 24.5
8.5 6.5 40 25
9 7 40.5 25.5
9.5 7.5 41 26
10 8 42 26.5
10.5 8.5 42.5 27
11 9 43 27.5
11.5 9.5 44 28
12 10 44.5 28.5
13 11 46 29.5
Use the CM column as your most reliable guide. Add about 1 cm of room at the front for natural foot expansion while running.
Men's Tops & Outerwear
Size Chest Hips Long Sleeve Length
Small 36–38 in 35–37 in 33.5 in
Medium 39–41 in 38–40 in 34.0 in
Large 42–44 in 41–43 in 34.8 in
X-Large 45–48 in 44–46 in 35.5 in
2X-Large 49–52 in 47–49 in 36.3 in
Men's Bottoms
Size Waist Hip Inseam
Small 29–30 in 35–36 in 31.5 in
Medium 31–34 in 37–40 in 32.0 in
Large 35–38 in 41–44 in 32.5 in
X-Large 39–42 in 44–47 in 32.5 in
2X-Large 43–44 in 47–48 in 32.5 in
Women's Tops & Outerwear
Size Chest Waist Hip Sleeve Length
X-Small 31–32 in 24–25 in 33–35 in 31.5 in
Small 33–35 in 26–28 in 36–37 in 32.0 in
Medium 36–38 in 29–31 in 38–40 in 32.5 in
Large 39–41 in 32–34 in 41–43 in 33.3 in
X-Large 42–44 in 35–38 in 44–47 in 34.0 in
2X-Large 45–48 in 39–42 in 48–51 in 34.8 in
Women's Bottoms
Size Waist Hips Inseam
X-Small (0) 25–26 in 34–35 in 30.5 in
X-Small (2) 26–27 in 35–36 in 30.5 in
Small (4) 27–28 in 36–37 in 31.0 in
Small (6) 28–29 in 37–38 in 31.0 in
Medium (8) 29–30 in 38–39 in 31.0 in
Medium (10) 30–31 in 39–40 in 31.0 in
Large (12) 31–33 in 40–42 in 31.0 in
Large (14) 33–35 in 42–44 in 31.5 in
X-Large (16) 35–37 in 44–46 in 31.5 in
X-Large (18) 37–39 in 46–48 in 31.5 in

How to Measure Your Foot

Step 1Place a sheet of paper on a hard floor against a wall. Stand on it with your heel lightly touching the wall.
Step 2Mark the tip of your longest toe and the outermost point of your heel. Repeat with the other foot.
Step 3Measure the distance between the marks for both feet, add 0.5 cm for room, then match it to the chart.

For the most accurate result, measure your feet at the end of the day when they are naturally slightly swollen. If your two feet differ, use the longer foot when reading the chart.

Estimate delivery times: 12-26 days (International), 3-6 days (United States).

Return within 60 days of purchase. Duties & taxes are non-refundable.

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Alien

Alien

The Alien is SCARPA's high-performance crossover ski mountaineering boot, built for uphill enthusiasts and athletes who want race-proven technology without compromising on versatility or value. Sharing the same 99mm last and Carbon Grilamid® LFT shell as the Alien 1.0, it delivers the lightweight rigidity and precision fit that serious skimo athletes demand, at an accessible entry point into the Alien family. The Speedlock Lite walk mode transitions seamlessly between uphill efficiency and downhill power, while the BOA® Fit System + cord closure locks in a glove-friendly, micro-adjustable fit on the skin track. Underfoot, the Vibram® UFO outsole handles mixed approach terrain with confidence. At 870g per half pair, the Alien punches well above its weight class.

 

  • Carbon Grilamid® LFT Shell — Lightweight, high-stiffness shell construction delivers race-caliber power transfer and torsional rigidity across demanding ski mountaineering terrain
  • Vibram® UFO Outsole — Purpose-built rubber compound provides reliable grip on mixed approach terrain, bridging the gap between boot and mountain
  • BOA® Fit System + Cord Closure — Tool-free micro-adjustable fit system locks the foot precisely in place, even with gloved hands in the coldest conditions
  • Speedlock Lite Ski/Walk Mode — Instant-release walk mechanism with 9°–13° adjustable forward lean lets you move efficiently on the skin track and charge hard on the descent
  • Intuition® Cross Fit Tour Lite Liner — Performance-tuned touring liner delivers all-day comfort and reliable warmth across long ski mountaineering objectives and training days