Please note these sizes are given as a guide only and should not be taken for the exact sizes as measurements vary from one t-shirt manufacturer to another.
T-shirts and Longsleeves.
| SIZE | To Fit Chest | Armpit To Armpit |
| SMALL | 36 - 38" / 92 – 97cm | 18" / 46cm |
| MEDIUM | 38 - 40" / 97 – 102cm | 20" / 51cm |
| LARGE | 40 - 43" / 102 – 109cm | 21.5" / 55cm |
| X LARGE | 43 - 46" / 109 – 117cm | 23" / 59cm |
| XX LARGE | 46 - 50" / 117 – 127cm | 25" / 64cm |
Hooded tops, Zipped Hooded Tops, Sweatshirts and Workshirts.
| SIZE | To Fit Chest | Armpit To Armpit |
| SMALL | 36 - 38" / 92 – 97cm | 19" / 48cm |
| MEDIUM | 38 - 41" / 97 – 104cm | 21" / 53cm |
| LARGE | 41 - 45" / 104 – 112cm | 22" / 56cm |
| X LARGE | 45 - 49" / 112 – 125cm | 24" / 61cm |
| XX LARGE | 49 - 53" / 125 – 135cm | 26" / 66cm |
Girls Shirts.
| SIZE | To Fit Chest | Armpit To Armpit | UK Size |
| SMALL | 30" | 15.5" | 8-10 |
| MEDIUM | 34" | 17.5" | 10-12 |
| LARGE | 36" | 18.5" | 12-14 |
| X LARGE | 38" | 19.5" | 14-16 |