Roidal Swimwear and Beachwear Size Chart
| UK Size | Roidal Size | US Size | EU | Underbust (Inches/cm) |
| 10 | 2 | 6 | 36 | 26.5"-28" / 68-72 |
| 12 | 3 | 8 | 38 | 28.5"-30" / 73-77 |
| 14 | 4 | 10 | 40 | 30.5"-32" / 78-82 |
| 16 | 5 | 12 | 42 | 32.5"-34" / 83-87 |
| 18 | 6 | 14 | 44 | 34.5"-36" / 88-92 |
| 20 | 7 | 16 | 46 | 36.5"-38" / 93-97 |