Westmont Athletics T-Shirt Size Guide
| Size | Body Length | Chest Width |
| Youth X-Small | 18" | 14" |
| Youth Small | 20 1⁄2" | 16" |
| Youth Medium | 22" | 17" |
| Youth Large | 231⁄2" | 18" |
| Youth X-Large | 25" | 19" |
| Adult X-Small | 27" | 16" |
| Adult Small | 28" | 18" |
| Adult Medium | 29¼" | 20" |
| Adult Large | 30¼ | 22" |
Adult X-Large |
31¼ |
24" |
| Adult 2X-Large | 321⁄2 | 26" |
| Size | Body Length | Chest Width |
| Youth X-Small | 45.7cm | 35.6cm |
| Youth Small | 52.1cm | 40.6cm |
| Youth Medium | 55.9cm | 43.2cm |
| Youth Large | 59.7cm | 45.7cm |
| Youth X-Large | 63.5cm | 48.3cm |
| Adult X-Small | 68.6cm | 40.6cm |
| Adult Small | 71.1cm | 45.7cm |
| Adult Medium | 73.7cm | 50.8cm |
| Adult Large | 76.2cm | 55.9cm |
| Adult X-Large | 78.7cm | 61cm |