Below is TUSA’s official recommended size guide for the TUSA Solla Full Foot Fins. Please measure your foot length carefully and consider whether you’ll be wearing thin neoprene socks to ensure the best possible fit.
| Size | US-Male | US-Female | EUR | CM |
| XS | 3-4 | 4.5-5.5 | 36-37 | 23-23.5 |
| S | 5-6 | 6-7.5 | 38-39 | 24-24.6 |
| M | 7-7.5 | 8-9 | 40-41 | 25-25.5 |
| ML | 8-9 | 9.5-10.5 | 42-43 | 26-26.5 |
| L | 9-11 | 10.5-12 | 44-45 | 27-27.5 |
| XL | 12-13 | 13.5-15 | 46-47 | 28-29.5 |