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:
Stand straight with your arms hanging naturally by your sides.
Start the measuring tape at the shoulder and extend it down to the desired hemline.
Wrap the measuring tape around the thinnest part of your waist.
Stretch the measuring tape across your back from one shoulder to the other.
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 |
| 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 |
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L***D (verified buyer)
Australia
I wear this under my t-shirts and no one can tell! It helps me sweat even on easy walk days around the track.
M***H (verified buyer)
Australia
The material is stretchy, so it never feels tight. I sweat a lot and my gym results seem faster.
E***R (verified buyer)
Australia
This sauna shirt helps me get super sweaty quickly and I love how it keeps my tummy looking smooth under my gym hoodie.
O***P (verified buyer)
Australia
Didn’t expect to love this top so much! It’s invisible under my joggers and definitely helps me sweat during treadmill runs.
H***M (verified buyer)
Australia
The fit is really nice and stretchy. No weird lines under my clothes. Back feels more supported, too.
M***K (verified buyer)
Australia
Every workout feels way more intense with this top. Fits like a glove and moves with me perfectly in every workout class.
N***G (verified buyer)
Australia
Keeps me warm on cool mornings and boosts my sweat for real. Fits under my work clothes with zero issues.
A***J (verified buyer)
Australia
Great for quick workouts after school. Makes me feel confident with a smoother shape and keeps my back straight.
J***T (verified buyer)
Australia
My favorite for gym days. It helps me look slimmer and I can sweat buckets. Easy to wash and reuse.
J***S (verified buyer)
Australia
Seriously ups my sweat but stays comfortable even when I’m jumping around. Never itchy or rubbing weird. Love it!