Gakkin Shirt Size Chart
All items are measured in inches.
| XS | S | M | L | XL | |
| Shoulder Width | 17 | 18 |
19 | 20 | 20.75 |
| Chest | 40 | 44 | 46 | 48 | 50 |
| Sleeve Length | 25 | 25.75 | 26.5 | 27.5 | 27.5 |
| Back Length | 29.5 | 30 | 30.5 | 31.75 | 33.5 |