Sweat More, Shape Faster
Feel confident in every gym session wearing Threo Sauna Top. Notice your body working harder during each movement. Heat-trapping fabric helps you sweat quickly and stay active longer. Easy to wear under clothes, nothing slows you down.
Boosted Sweat
Advanced materials raise your temperature for better workouts. Extra sweat helps you achieve results in less time.


Comfort Fit
The stretchy design feels light and allows you to move freely. Smooth seams prevent rubbing or discomfort during any exercise.
Flatter Silhouette
Creates a sleek outline under any outfit for daily confidence. Designed to support posture and keep everything feeling secure.

Size Guide

- TO MEASURE YOURSELF:
- 1. Stand straight with your arms hanging naturally by your sides.
- 2. Start the measuring tape at the shoulder and extend it down to the desired hemline.
- 3. Wrap the measuring tape around the thinnest part of your waist.
- 4. Stretch the measuring tape across your back from one shoulder to the other.
- 5. Place the measuring tape at the shoulder and extend it down to the wrist.
| SIZE | LENGTH | WAIST | SHOULDER | SLEEVE | ||||
|---|---|---|---|---|---|---|---|---|
| cm | inch | cm | inch | cm | inch | cm | inch | |
| S-M | 54 | 21.26 | 60-66 | 23.62-25.98 | 44 | 17.32 | 61 | 24.02 |
| L-XL | 56 | 22.05 | 66-72 | 25.98-28.35 | 48 | 18.9 | 62 | 24.41 |
| 2XL-3XL | 58 | 22.83 | 72-85 | 28.35-33.46 | 50 | 19.69 | 63.5 | 25 |
| 4XL-5XL | 60 | 23.62 | 85-95 | 33.46-37.4 | 54 | 21.26 | 65 | 25.59 |


















Emily R.
This sauna shirt helps me get super sweaty quickly and I love how it keeps my tummy looking smooth under my gym hoodie.
Jenna S.
Seriously ups my sweat but stays comfortable even when I’m jumping around. Never itchy or rubbing weird. Love it!
Maya K.
Every workout feels way more intense with this top. Fits like a glove and moves with me perfectly in every workout class.
Addison Y.
Love it with leggings, great for running!
Maria H.
The material is stretchy, so it never feels tight. I sweat a lot and my gym results seem faster.
Nina F.
Good comfort, stretches well when moving lots.
Peyton V.
So light to wear, helps my gym results.
Laura D.
I wear this under my t-shirts and no one can tell! It helps me sweat even on easy walk days around the track.
Violet Q.
Sweaty in no time, sleeves fit well.
Chloe W.
Very comfy, adds extra heat to workouts.