Size Guide | Marc Darcy
| BLAZER SIZE | CHEST WIDTH | SHOULDER LENGTH | SLEEVE LENGTH | BACK LENGTH |
| 34 | 18.8 | 16.9 | 24.4 | 27.5 |
| 36 | 19.6 | 17.3 | 24.8 | 27.9 |
| 38 | 20.4 | 17.7 | 25.1 | 28.3 |
| 40 | 21.2 | 18.1 | 25.5 | 28.7 |
| 42 | 22 | 18.7 | 25.9 | 29.1 |
| 44 | 23.2 | 19.2 | 26.3 | 29.5 |
| 46 | 24.4 | 20.1 | 26.7 | 29.9 |
| 48 | 25.5 | 20.8 | 27.1 | 30.1 |
| 50 | 26.7 | 21.5 | 27.1 | 30.7 |
| 52 | 27.9 | 22.2 | 27.1 | 31.1 |
| WAISTCOAT SIZE | CHEST | BACK LENGTH |
| 34 | 17.3 | 22.8 |
| 36 | 18.3 | 23.2 |
| 38 | 19.2 | 23.4 |
| 40 | 20.2 | 23.6 |
| 42 | 21.2 | 24 |
| 44 | 22.2 | 24.4 |
| 46 | 23.4 | 24.6 |
| 48 | 24.6 | 24.8 |
| 50 | 25.7 | 25.1 |
| 52 | 26.9 | 25.5 |
| TROUSERS | SIZE | SEAT | HEM WIDTH |
| 28 | 17.9 | 7.1 | |
| 30 | 18.8 | 7.3 | |
| 32 | 19.7 | 7.5 | |
| 34 | 20.6 | 7.7 | |
| 36 | 21.5 | 7.9 | |
| 38 | 22.4 | 8.3 | |
| 40 | 23.3 | 8.7 | |
| 42 | 24.2 | 8.8 | |
| 44 | 25.1 | 8.8 | |
| 46 | 26.1 | 8.8 |
| SKINNY TROUSERS | SIZE | SEAT | HEM WIDTH |
| 28 | 17.9 | 6.2 | |
| 30 | 18.8 | 6.4 | |
| 32 | 19.7 | 6.4 | |
| 34 | 20.6 | 6.7 | |
| 36 | 21.5 | 7 |
International Conversions
| MEN'S TOPS | CHEST | NECK SIZE | EU | USA |
| S | 36 | 15 | 44 | 36 |
| M | 38 - 40 | 15½ | 46-48 | 38 - 40 |
| L | 42 - 44 | 16-16½ | 50-52 | 42 - 44 |
| XL | 46 | 17 | 54-56 | 46 |
| 2XL | 48 | 17½-18 | 56 | 48 |
| 3XL | 50 - 52 | 18½-19 | 58-60 | 50 - 52 |
| 4XL | 54 - 56 | 19½ | 62-64 | 54 - 56 |
| 5XL | 58 | 20 | 66 | 58 |
| 6XL | 60 - 62 | 20-21½ | 70 | 60 - 62 |
| 7XL | 64 | 23-24 | 72 | 64 |
| MEN'S BOTTOMS | WAIST | EU | USA |
| S | 30 | 46 | 30 |
| M | 32 - 34 | 48-50 | 32 - 34 |
| L | 36 | 52 | 36 |
| XL | 38 - 40 | 54-56 | 38 - 40 |
| 2XL | 42 - 44 | 58-60 | 42 - 44 |
| 3XL | 46 - 48 | 62 | 46 - 48 |
| 4XL | 50 - 52 | 64 | 50 - 52 |
| 5XL | 54 - 56 | 66 | 54 - 56 |
| 6XL | 58 - 60 | 68 | 58 - 60 |