Home F1 LT Men's

F1 LT Men's

Regular price $899.00 Sale price $269.70
70% OFF
Color: Carbon/Orange

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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F1 LT Men's

F1 LT Men's

Ultralight with uncompromising control, the F1 LT is built for demanding ski mountaineers and fast-moving backcountry athletes. Designed for long ascents and technical descents, it delivers exceptional efficiency without sacrificing stability. A Carbon Grilamid® LFT shell and cuff provide powerful stiffness at minimal weight, while the Speed Lock LT ski/walk mechanism offers a 72-degree range of motion for fluid uphill strides. The BOA® Fit System secures the lower shell for a precise, glove-friendly fit, and the Fast Buckle closure simplifies transitions between climb and ski mode. Inside, the Intuition® Tour LT liner delivers warmth and custom-molded comfort that adapts to your stride. A Vibram® UFO RS sole ensures reliable traction across ice, rock, and steep skin tracks.


For those who measure their days in vertical feet, the F1 LT proves that lightness is strength in motion.


  • Carbon Grilamid® LFT shell and cuff combine ultralight weight with exceptional torsional rigidity for responsive downhill performance.
  • Speed Lock LT ski/walk mechanism provides a 72-degree range of motion for natural uphill efficiency and secure downhill stability.
  • BOA® Fit System delivers quick, micro-adjustable precision for comfort and control in variable terrain.
  • Fast Buckle closure system enables fast, intuitive transitions between touring and skiing modes.
  • Intuition® Tour LT liner offers heat-moldable warmth, comfort, and support on long mountain missions.
  • Vibram® UFO RS sole ensures dependable traction and durability on icy bootpacks and mixed alpine terrain.


The F1 LT is ultralight on the climb, confident on the descent, and ready for the highest objectives.