Back 70 Size & Fit Guide
EU sizes · Size by foot length · Some EU sizes cover two US sizes, some just one
Find your Back 70 size with Back 70’s official women’s EU-to-US chart by foot length — or stop in for a Brannock fitting at our Kettering, Ohio store.
How it fits
Back 70 sneakers come in European (EU) sizes. Some EU sizes cover two US sizes — EU 38 fits a US 7 or 7½ — while others match just one: EU 37 is a US 6½ and EU 40 is a US 9.
Measure your foot and use the foot length in the chart to choose between sizes.
Between sizes
Between sizes? Size up if you wear thick socks or orthotics, or you're on your feet all day. Choose the smaller size if you like a snug fit.
Widths
We carry Back 70 in one standard width.
Women
| EU | US | Foot length (cm) | Foot length (in) |
|---|---|---|---|
| 36 | 6 | 23.6 | 9.29" |
| 37 | 6½ | 24.3 | 9.57" |
| 38 | 7 – 7½ | 25 | 9.84" |
| 39 | 8 – 8½ | 25.6 | 10.08" |
| 40 | 9 | 26.3 | 10.35" |
| 41 | 9½ – 10 | 26.9 | 10.59" |
| 42 | 10½ – 11 | 27.5 | 10.83" |
EU 35 and 43 are available in select styles but aren’t on Back 70’s chart — call us and we’ll help. Foot lengths in centimeters are Back 70’s; inches are converted.
How to measure
- Place a sheet of paper on a flat floor (tape it down so it doesn’t slip).
- Stand with one foot firmly on the paper.
- Mark the tip of your big toe and the back of your heel, then measure between the marks.
- Repeat with the other foot. If your feet are different sizes, use the larger measurement.
Need help? We measure every customer with a Brannock device at our Kettering store. Stop in for a fitting, or call us at 937.298.1801 and we’ll help you choose. Ready to shop? Shop all Back 70 →
Source: Back 70 EU-US size chart (back70.us) · Last checked October 2026