
"I love my heirloom wedding ring, but sometimes I need a safer ring so I can have fun without worrying if I'm going to lose my diamond. I always wear my FLEX Ring while traveling and working out at the gym, plus on weekend hikes in the mountains with our dogs and kids."- Tiffany
| SIZE - US | Circumference mm | Diameter mm |
| 4 | 46.7 | 14.9 |
| 5 | 49.3 | 15.7 |
| 6 | 51.8 | 16.5 |
| 7 | 54.4 | 17.3 |
| 8 | 56.9 | 18.1 |
| 9 | 59.5 | 18.9 |
| 10 | 62.1 | 19.8 |
| 11 | 64.6 | 20.6 |
| 12 | 67.2 | 21.4 |
| 13 | 69.7 | 22.2 |
| 14 | 72.3 | 23.0 |
| 15 | 74.8 | 23.8 |
| 16 | 77.4 | 24.6 |