Australia's Only Dual-Zone

Sweat-Proof Undershirt

Stops underarm and back sweat

before it reaches your shirt.

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Excellent 4.7 | 1000+ Happy Customers

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Australia's Only Dual-Zone Protection

Underarm and upper-back panels stop sweat before it reaches your outer shirt.

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Odour Control

SILVADUR™ technology helps reduce odour-causing bacteria.

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Tailored Slim Fit

Soft, stretchy MicroModal that stays invisible under your shirt.

The LayerOne Difference

Front AND Back Protection

The two spots your outer shirt shows sweat first. Both sorted.

Built For Aussie Weather

Engineered for how Aussie men actually live and work—hot commutes, stuffy offices, layers that come off as the day warms up.

Made For All-Day Comfort

No heavy cotton here: MicroModal, so it feels light and comfortable under your shirt all day.

Real results

99% of customers noticed fewer visible sweat marks.

Pick Your Pack
Try the difference with one
Solo Starter (1 Pack)
SHOP 1-PACK
Wear one, wash one, spare one
Core Set (3 Pack)
SHOP 3-PACK
Monday to Friday sorted
The Week Long (5 Pack)
SHOP 5-PACK
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30 Day Money-Back Guarantee


Wear your first LayerOne and see how it performs under your own shirts.

If it’s not right for you, simply return or exchange it within 30 days.

Protection Without the Bulk

LayerOne isn’t just any old undershirt with sweat pads.

It combines premium Micro-Modal fabric with targeted sweat-proof panels and built-in odour control (SILVADUR™) - so it feels soft under your shirt, while stopping sweat marks before they show.

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Trusted by 1000's of Aussie men

Average rating 4.7

One less thing to worry about

I used to think sweat marks were just part of the day. Since wearing LayerOne, it’s honestly one less thing on my mind.

George M, Mackay

My girlfriend loves it

My girlfriend bought me a LayerOne after seeing the ads pop up - she was sick of my sweat marks. It worked so well she ended up getting me one for every day of the week.

Tom R, Sydney

Just works

I have enjoyed wearing this undershirt. It's kept me dry and cool. I had tried to cheaper ones from target, but it didn't do anything. You get what you pay for.

Trevor M, Cairns