Learn how to take your measurements accurately.
The right size avoids fatigue.
Prevention of friction and blisters.
Avoid tedious order returns.
Always use your usual running socks.
Take a sheet of paper

Place your foot on it
Trace the outline with a pen

Measure from heel to longest toe

Measure the widest part

Repeat for the second foot

| Size | Classification | Typical brands |
|---|---|---|
| < 96 mm | Narrow (B) | La Sportiva, Salomon |
| 96–102 mm | Standard (D) | Nike, Adidas, Asics |
| 103–108 mm | Wide (2E) | New Balance, Brooks (2E) |
| > 108 mm | Extra wide (4E) | Altra, New Balance (4E) |
| Size | Classification | Typical brands |
|---|---|---|
| < 87 mm | Narrow (2A) | La Sportiva |
| 87–93 mm | Standard (B) | Nike, Adidas, Asics |
| 94–99 mm | Wide (D) | Brooks (D), New Balance (D) |
| > 99 mm | Extra wide (2E) | Altra |
Keep the largest of the two measurements
Understanding your size
| Measure in CM | 23.5 | 24.0 | 24.5 | 25.0 | 25.5 | 26.0 | 26.5 | 27.0 | 27.5 | 28.0 | 28.5 | 29.0 | 29.5 | 30.0 | 30.5 | 31.0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Corresponding EU size | 37.5 | 38 | 39 | 39.5 | 40 | 41 | 42 | 42.5 | 43 | 44 | 44.5 | 45 | 46 | 46.5 | 47 | 47.5 |
Always add 1cm for toe room.
Use the converterAlways base your size on the largest foot.
Opt for 'Wide' width models.
Adapt your lacing to relieve pressure.
Check for stability and support.
Determine your arch type

The footprint shows about half of the outer band.

The footprint is almost entire and without a cut.

The footprint is very thin, even cut in the center.