Swim Faster, Feel Comfortable Every Lap
Enjoy every session using lightweight, flexible fabric that moves freely. Quick-dry material keeps you feeling fresh after every dip. Designed for active people, these shorts fit snugly and stay put. No distractions, just smooth movement through every stroke.
Streamlined Fit
Threo design shapes closely, helping reduce drag in water. Focus stays on every stroke, never on loose or shifting gear.

Quick Drying
Material sheds water fast, so you finish dry and happy. No damp, heavy feeling after swimming or training sessions.

Flexible Comfort
Threo trunks stretch gently, giving easy movement at all times. Feel free whether competing or relaxing by the pool.

Size guide

TO MEASURE YOURSELF:
Stand straight with your arms hanging naturally by your sides.
Wrap the measuring tape around the thinnest part of your waist.
| SIZE | WAIST | |
|---|---|---|
| cm | inch | |
| L | 63-70 | 24.8-27.56 |
| XL | 73-77 | 28.74-30.32 |
| 2XL | 80-83 | 31.5-32.68 |
| 3XL | 87-93 | 34.25-36.61 |
| 4XL | 97-103 | 38.19-40.55 |
| 5XL | 104-113 | 40.94-44.49 |
| Size | US | UK | EU | Foot length | |
|---|---|---|---|---|---|
| cm | inch | ||||
| 35 | 5.5 | 4 | 35 | 23 | 9.06 |
| 36 | 6 | 4.5 | 36.5 | 23.5 | 9.25 |
| 37 | 6.5 | 5 | 37 | 24 | 9.45 |
| 38 | 7 | 5.5 | 38 | 24.5 | 9.84 |
| 39 | 7.5 | 6.5 | 38.5 | 25 | 10.04 |
| 40 | 8 | 7 | 39 | 25.5 | 10.04 |
| 41 | 8.5 | 7.5 | 41 | 26 | 10.24 |
| 42 | 9 | 8 | 42 | 26.5 | 10.43 |
| 43 | 9.5 | 9.5 | 43 | 27 | 10.86 |
| 44 | 10 | 10 | 44 | 28 | 11.22 |
















A***P (verified buyer)
Australia
Super easy to move in, no tight spots or itchy seams. These trunks keep their shape all day and are so comfy.
J***W (verified buyer)
Australia
These trunks make laps at the pool so much easier! No bunching, and I dry fast after swimming. They move with me really well.
B***F (verified buyer)
Australia
These swim shorts fit just right. No sagging, no chafing, and I could move any way I wanted. Great for serious swimming!
M***T (verified buyer)
Australia
Loved how comfy they are, even after an hour in the water. They never rode up, and the fabric feels light and soft.
K***L (verified buyer)
Australia
Tried these out at the lake and wow! Water just runs off, and I was dry quick. Super stretch, perfect for beach hanging too.
J***H (verified buyer)
Australia
I wore these all afternoon by the pool, and they dried fast after every swim. They’re soft but stay up, even when I dive.
R***C (verified buyer)
Australia
Awesome for my morning swims. They never get heavy even after lots of laps. The stretchy fit is the best!
D***D (verified buyer)
Australia
Best swimwear I’ve used! I don’t have to keep adjusting them, and they look really cool too. Quick-drying is a big plus.
M***W (verified buyer)
Australia
Very comfy, moves well, dries fast.
O***S (verified buyer)
Australia
Good trunks, very comfortable and light.