Ariat adult half chap size guide
| Size | Width/Height |
| XXS | 12.5" / 15.5" |
| XSR | 13.5" / 16.5" |
| XSM | 13.5" / 18" |
| XST | 13.5" / 19.5" |
| SS | 14.5" / 16.5" |
| S | 14.5" / 17.5" |
| SM | 14.5" / 18.5" |
| ST | 14.5 / 19.5" |
| MS | 15.5" / 17.5" |
| M | 15.5" / 18.5" |
| MT | 15.5" / 19.5" |
| LS | 16.5" / 17.5" |
| L | 16.5" / 18.5" |
| LT | 16.5" / 19.5" |
| XL | 17.5" / 18.5" |