Speedo Fins Size Chart
Speedo Switchblade Fins Sizing Information
| Size | Kids' | Women's | Men's |
|---|---|---|---|
| XXXS | 1 - 1.5 | - | - |
| XXS | 2 - 3 | 3 - 4 | - |
| XS | 4 - 5 | 5 - 6 | - |
| S | 6 - 7 | 7 - 8 | 5 - 6 |
| M | - | 9 - 10 | 7 - 8 |
| L | - | 11 - 12 | 9 - 10 |
| XL | - | 13 - 14 | 11 - 12 |
| XXL | - | 14 - 15 | 13 - 14 |
Speedo Trialon Fins Size Chart
| Size | Kids' | Women's | Men's | Length (end of toe to end of heel) |
|---|---|---|---|---|
| XXXS | 11-13 | - | - | 7.5 in |
| XXS | 1-3 | - | - | 8 in |
| XS | 3-4 | 4-5 | - | 8.7 |
| S | - | 6-7 | 5-6 | 8.9 in |
| M | - | 8-9 | 7-8 | 9.4 in |
| L | - | 9-10 | 8-9 | 10 in |
| XL | - | 11/12 | 10-11 | 10.5 in |
| XXL | - | 13-14 | 12-13 | 10.9 in |
*Fins should have a snug fit. If you are in between measurements we recommend sizing down.