Össur Formfit Night Splint sizing
Measurement: Shoe size, using the published US, UK, or EU scale and Male or Female column.
| Size | US shoe size — Male | US shoe size — Female | UK shoe size — Male | UK shoe size — Female | EU shoe size — Male | EU shoe size — Female |
|---|---|---|---|---|---|---|
| Small | Up to 7 | Up to 7.5 | Up to 6.5 | Up to 5 | Up to 39 | Up to 38 |
| Medium | 7.5-10 | 8-10.5 | 7 – 9.5 | 5.5 – 8 | 39.5 – 44 | 38.5 – 43 |
| Large | 10.5 and up | 11 and up | 10 and up | 8.5 and up | 44.5 and up | 43.5 and up |
- The manufacturer specifies shoe size as the required measurement.
- Ranges and shoe-size scales are reproduced as published; no unit conversions were calculated.
- This chart applies to the Formfit Night Splint shown here.
- The manufacturer lists a universal-side configuration for this Formfit Night Splint.

