It's not knitted by Mrs Weasley, but it's just as comfy! Show your school pride at the Yule Ball.
Size Guide A.
T-shirts.
| Chest Width (Inches) | Chest Width (Centimetres) | |
| Small | 36 | 91.5 |
| Medium | 38 | 96.5 |
| Large | 42 | 106.5 |
| Extra Large | 46 | 117 |
| XXL | 48 | 122 |
Hoodies & Jumpers
| Chest Width (Inches) | Chest Width (Centimetres) | |
| Small | 36 | 91.5 |
| Medium | 40 | 101.5 |
| Large | 44 | 112 |
| Extra Large | 48 | 122 |
| XXL | 50 | 127 |
Size Guide B.
Size Guide C.
T-shirts.
| Chest Size | Chest Width (Inches) | Chest Width (Centimetres) | Body Length (Inches) | Body Length (Centimetres) | |
| Small | 97 | 19.3 | 49 | 27.4 | 69.5 |
| Medium | 101 | 20.1 | 51 | 28.1 | 71.5 |
| Large | 105 | 20.9 | 53 | 28.9 | 73.5 |
| Extra Large | 109 | 21.7 | 55 | 29.7 | 75.5 |
| XXL | 113 | 22.4 | 57 | 30.5 | 77.5 |
Hoodies.
| Chest Size | Chest Width (Inches) | Chest Width (Centimetres) | Body Length (Inches) | Body Length (Centimetres) | |
| Small | 97 | 20.7 | 52.5 | 27.4 | 69.5 |
| Medium | 101 | 21.5 | 54.5 | 28.1 | 71.5 |
| Large | 105 | 22.2 | 56.5 | 28.9 | 73.5 |
| Extra Large | 109 | 23.0 | 58.5 | 29.7 | 75.5 |
| XXL | 113 | 23.8 | 60.5 | 30.5 | 77.5 |