Use the charts below to determine your size for foam and standard Danner Airthotics:
DANNER AIRTHOTIC SIZE CHART
| Men's US Shoe Size | Women's US Shoe Size | Airthotic Size |
| - | 4 - 6.5 | X-Small |
| 6 - 7.5 | 7 - 9.5 | Small |
| 8 - 9.5 | 10 - 11 | Medium |
| 10 - 11.5 | 10.5 - 13.5 | Large |
| 12 - 15 | - | X-Large |