Sizing Chart for Le Tricoteur Guernsey
| 30 | 34 | 38 | 40 | 42 | 46 | 50 | 54 | |
| Chest | 28inch | 32inch | 36inch | 38inch | 40inch | 44inch | 48inch | 52inch |
| Pit to Pit | 15inch | 18inch | 20inch | 22inch | 23inch | 24inch | 27inch | 29inch |
| 38cm | 46cm | 51cm | 56cm | 58.5cm | 61cm | 68.5cm | 73.5cm | |
| Pit to Cuff | 18inch | 20inch | 23inch | 24inch | 26inch | 26inch | 26inch | 26inch |
| 46cm | 51cm | 58.5cm | 61cm | 66cm | 66cm | 66cm | 66cm | |
| Collar to Hem | 19inch | 23.5inch | 26inch | 27inch | 28.5inch | 29inch | 29inch | 31inch |
| 48cm | 60cm | 66cm | 68.5cm | 72.5cm | 73.5cm | 73.5cm | 79cm | |
| Shoulder to Shoulder | 15inch | 18inch | 20inch | 22inch | 23inch | 24inch | 27inch | 29inch |
| 38cm | 46cm | 51cm | 56cm | 58.5cm | 61cm | 68.5cm | 73.5cm |