Flash Happy Slippers Slippers Size Chart - Yellow
| US Size | UK Size | EU Size | International Size | Foot Length (CM) |
| 5.5-6 | 3.5-4 | 35-36 | 36-37 | 23.0 - 23.5 |
| 6.5-7 | 4.5-5 | 37-38 | 38-39 | 24.0 - 24.5 |
| 7.5-8 | 5.5-6 | 39-40 | 40-41 | 25.0 - 25.5 |
| 8.5-9 | 6.5-7 | 41-42 | 42-43 | 26.0 - 26.5 |
| 9.5-10 | 7.5-8 | 43-44 | 44-45 | 27.0 - 27.5 |