size
Size Guide
Footwear & Apparel — Measurement & Conversion Reference
Adult Footwear Size Chart
Built on European half sizes — the “+” denotes La Sportiva “plus” sizes that sit between standard US sizes for a more precise fit.
| Men's US | European | Women's US | Foot Length (cm) |
|---|---|---|---|
| 2 | 33 | 2.5 | 21.0 |
| 2.5 | 33.5 | 3 | 21.3 |
| 2.5+ | 34 | 3.5 | 21.6 |
| 3 | 34.5 | 4 | 22.0 |
| 3.5 | 35 | 4.5 | 22.3 |
| 4 | 35.5 | 5 | 22.7 |
| 4.5 | 36 | 5.5 | 23.0 |
| 4.5+ | 36.5 | 5.5+ | 23.3 |
| 5 | 37 | 6 | 23.6 |
| 5.5 | 37.5 | 6.5 | 24.0 |
| 6 | 38 | 7 | 24.3 |
| 6.5 | 38.5 | 7.5 | 24.6 |
| 6.5+ | 39 | 7.5+ | 25.0 |
| 7 | 39.5 | 8 | 25.3 |
| 7.5 | 40 | 8.5 | 25.6 |
| 8 | 40.5 | 9 | 26.0 |
| 8.5 | 41 | 9.5 | 26.3 |
| 8.5+ | 41.5 | 9.5+ | 26.5 |
| 9 | 42 | 10 | 27.0 |
| 9.5 | 42.5 | 10.5 | 27.3 |
| 10 | 43 | 11 | 27.6 |
| 10.5 | 43.5 | 11.5 | 28.0 |
| 10.5+ | 44 | 11.5+ | 28.3 |
| 11 | 44.5 | 12 | 28.6 |
| 11.5 | 45 | 12.5 | 29.0 |
| 12 | 45.5 | 13 | 29.3 |
| 12.5 | 46 | 13.5 | 29.6 |
| 12.5+ | 46.5 | 13.5+ | 30.0 |
| 13 | 47 | 14 | 30.3 |
| 13.5 | 47.5 | 14 | 30.6 |
| 14 | 48 | 15 | 31.0 |
| 15 | 49 | 16 | 31.6 |
| 16 | 50 | — | 32.0 |
Note: Foot Length (cm) is the Mondopoint measurement and reflects foot length, not insole length. Climbing and mountain models use different fit rules — see the dedicated tabs.
How to Measure Your Foot
The most reliable way to find your size is your actual foot length in centimeters.
- Place a sheet of paper against a wall and stand on it with your heel touching the wall.
- Mark the tip of your longest toe on the paper.
- Measure the distance from the wall to the mark in centimeters — this is your foot length.
- Repeat for the other foot and use the longer measurement.
- Match your centimeter value to the Foot Length (cm) column in the Size Chart, then read across for the European / US equivalent.
Why centimeters matter: La Sportiva builds footwear on European half sizes, which are smaller increments than US half sizes — giving more size options per run for a better fit. A remembered US size alone is not a reliable reference across models.
Climbing Shoe Fit
Climbing shoes are meant to fit snug — usually smaller than your street shoe.
Soft / Aggressive
Generally 2–3 sizes smaller than your street shoe for maximum sensitivity and edging power.
Trad / All-day
Fit 1–2 sizes under your street shoe size for comfort on long routes.
Stretch
Unlined slip-lasted shoes stretch about one full size; lined shoes stretch about half a size. Factor this in before buying.
Tip: Different last shapes fit different feet — try several models in your genre. If it feels good, it probably is. A well-fit comfortable shoe outperforms an ill-fitting tighter one.
Hiking & Mountain Boot Fit
Boots need room for socks, insoles, and foot swell during a long day.
- Find your American size in the Size Chart, then go across to your European size.
- Add one half European size to that value for hiking and mountain boots.
- Try boots in the afternoon/evening when feet are at their fullest, wearing your usual socks and any orthotics.
- With the boot unlaced and toes touching the front, you should be able to slip your index finger behind the heel.
- The lacing should lock the midfoot with no wobble; the heel should not slip; toes need room to splay.
Handmade note: Footwear is handmade, so minor variations in fit can occur between pairs of the same size. Don't walk outside or discard packaging until the fit is confirmed.
Apparel Size Reference
General technical clothing reference (body measurements).
| Size | Chest (in / cm) | Waist (in / cm) | Hip (in / cm) |
|---|---|---|---|
| XS | 33–35 / 84–89 | 27–29 / 69–74 | 33–35 / 84–89 |
| S | 35–37 / 89–94 | 29–31 / 74–79 | 35–37 / 89–94 |
| M | 38–40 / 97–102 | 32–34 / 81–86 | 38–40 / 97–102 |
| L | 41–43 / 104–109 | 35–37 / 89–94 | 41–43 / 104–109 |
| XL | 44–46 / 112–117 | 38–40 / 97–102 | 44–46 / 112–117 |
| XXL | 47–49 / 119–124 | 41–43 / 104–109 | 47–49 / 119–124 |
Note: Apparel is a general body-measurement guide. For model-specific fits, check the individual product page.
Helixir Shorts Men's (2025)
Night Sky/Chalk
/
XXS
Regular price
$32.70
Regular price
$109
Sale price
$32.70
Unit price
per
Helixir Shorts Men's (2025)
Night Sky/Chalk
/
XXS
Regular price
$32.70
Regular price
$109
Sale price
$32.70
Unit price
per