Effortless Movement Every Time You Swim
Discover more underwater and enjoy every swim session easily. Threo fins gently support your legs and keep your feet relaxed. Every kick feels natural and helps you glide without strain. Dive longer and explore further with comfort on every trip.
Custom Fit
Easily adjust straps for any foot shape quickly and securely. Quick-release buckles save time, so you never struggle getting ready.


Lightweight Comfort
Flexible, soft material prevents sore spots and rubbing on skin. Breathable mesh design keeps feet cool and happy throughout use.
Travel Ready
Short, sturdy blades can be easily packed for trips anywhere. Mesh bag and inserts protect your fins and keep everything neat.

Size Guide

- TO MEASURE YOURSELF:
- 1. Stand in your bare feet with your heel against the wall.
- 2. Place a ruler on the floor parallel to your foot with the end of the ruler against the wall.
- 3. Find the length from the wall to the end of your longest toe.
| SIZE | US | UK | EU | FOOT LENGTH | |
|---|---|---|---|---|---|
| cm | inch | ||||
| S-M | 5.5-8.5 | 4-7 | 37-41 | 23-25.5 | 9.06-10.04 |
| L-XL | 9-13 | 8-12 | 42-47 | 26.5-29.8 | 10.43-11.73 |





















