Size guide
HATS (Bowler, borsalino, coppola and tubco):
| Size | Head circumference (cm) | Inches | UK Cap Size | US / Canada Cap Size |
| SMALL (S) | 54 | 21 1/8 | 6 5/8 | 6 3/4 |
| 55 | 21 1/2 | 6 3/4 | 6 7/8 | |
| MEDIUM (M) | 56 | 21 7/8 | 6 7/8 | 7 |
| 57 | 22 1/4 | 7 | 7 1/8 | |
| LARGE (L) | 58 | 22 5/8 | 7 1/8 | 7 1/4 |
| 59 | 23 | 7 1/4 | 7 3/8 | |
| XL | 60 | 23 1/2 | 7 3/8 | 7 1/2 |
| 61 | 23 7/8 | 7 1/2 | 7 5/8 | |
| OVERSIZE | 62 | 24 1/4 | 7 5/8 | 7 3/4 |
SHIRTS:
| Size | Italian Shirt Size | American Shirt Size |
|---|---|---|
| SMALL (S) | 38 | 15 |
| MEDIUM (M) | 39 - 40 | 15 ½ - 15 ¾ |
| LARGE (L) | 41 - 42 | 16 - 16 ½ |
| XL | 43 - 44 | 17 - 17 ½ |
| XXL | 45 - 46 | 18 - 18 ½ |