So, does it actually work?
We asked customers who had worn LayerOne for 30 days+
99% noticed fewer visible sweat marks
94% said their nice shirts lasted longer
91% felt more confident wearing the colours they'd been avoiding
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★★★★★ 4.7 | 527 REVIEWS
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The light shirts stay in the wardrobe. The jacket stays on longer than you want. You keep your arms down when you'd rather not.
And once you notice a sweat mark, it's hard to think about anything else.
You shouldn't have to dress around sweat.
Find Your Perfect Fit
The right fit means the right comfort.
Check our sizing guide before you order to make sure LayerOne works seamlessly under your shirts.
If your size isn’t available get in touch with us - we want every man to say goodbye to sweat stains for good!
Find Your Perfect Fit
The right fit means the right comfort.
Check our sizing guide before you order to make sure LayerOne works seamlessly under your shirts.
If your size isn’t available get in touch with us - we want every man to say goodbye to sweat stains for good!
Free tracked shipping Australia-wide.
Orders ship the next business day and usually arrive within 2–3 business days.
Free tracked shipping Australia-wide.
Orders ship the next business day and usually arrive within 2–3 business days.
We’re confident LayerOne will outperform every undershirt you’ve worn. That’s why your purchase is backed by our 30-Day Guarantee.
We’re confident LayerOne will outperform every undershirt you’ve worn. That’s why your purchase is backed by our 30-Day Guarantee.
Fast & Free Shipping
30-Day Money-Back Guarantee
Secure checkout

Built-in sweat-proof barriers protect the two places sweat marks show up most: your underarms and upper back.

SILVADUR™ silver-ion tech stops odour-causing bacteria before it starts.

Micro-Modal stretch fabric that moves with you. No bulk, no bunching, invisible under anything.
So, does it actually work?
We asked customers who had worn LayerOne for 30 days+
99% noticed fewer visible sweat marks
94% said their nice shirts lasted longer
91% felt more confident wearing the colours they'd been avoiding
See for yourself.
Water is poured directly over LayerOne’s underarm and upper-back sweat barriers.
The tissue underneath stays dry as.
1000+ Happy Customers
Excellent 4.7
"I’ve lost count on how many light shirts I’ve ruined due to sweat marks. A mate told me to try LayerOne. A month in, and I haven’t seen a single sweat patch. Even the smell is gone!"
Verified
Malcolm, Geelong
"I work as a real estate agent and I'd keep my blazer on on warm days to avoid showing sweat market. This shirt has changed my confidence and it's also very comfortable."
Verified
Amir, Sydney
"My wife had been nagging me for years to do something about my sweat problem. The stains were wrecking my business shirt. My friend recommended this - I bought 3 and now I wear it everyday to work"
Verified
Abdul, Parramatta
"I used to go through two shirts a day in summer. Now I just wear this undershirt and stay dry from morning to night. It’s been a total game-changer."
Verified
Christian, Sydney
"I’ve tried a few sweatproof shirts before, but this one is by far the most comfortable. The fabric is breathable, and it actually works in stopping sweat from showing. Worth every cent."
Verified
Leon, Newcastle
"This shirt fits me better than many of the other shirt I have in the wardrobe. The fabric feels great and wraps around my body nicely. Well done Layerone, I'm impressed"
Verified
Leslie, Logan
"I'm 6.2" and this shirt doesn't feel short at all. I work as an Accounts Manager, so I'm always on the road. This shirt has kept me dry and reduced my dependence on deodorant to smell fresh"
Verified
Dev, Perth
“I wore this undershirt from the office straight to the gym - 12 hours later, still no sweat patches and no smell. It handled a full workday and a workout without breaking a sweat (literally). I’m genuinely impressed.”
Verified
Brian, Melboune
"I'm a pretty hair guy, so I sweat a fair bit. I would buy the undershirts from Target, but they never kept my area dry. This shirt has helped me stay dry and smelling fine like never before."
Verified
Moe, Sydney
"This is my 2nd shirt. I bought one for my brother the other day as he sweats no matter the temperature. He loves it too. I should have bought a 3-pack to for a better deal!"
Verified
Sid, Gold Coast
"At first I thought the price was a bit much for an undershirt… but now I wear it 4–5 times a week. Worth every cent. Keeps me dry and saves my good shirts."
Verified
Don, Sydney
"One of the best undershirts I've tried in years. Stops back and underarm sweat stains"
Verified
Sebastian, Cairns
"I was sceptical at first, but seeing is believing! Even after a long, hot day, there isn't a single sweat mark. The protection is great, and the shirt still feels light and comfortable. This is exactly what I’ve been looking for."
Verified
Josh, Melbourne
"I’ve lost count on how many light shirts I’ve ruined due to sweat marks. A mate told me to try LayerOne. A month in, and I haven’t seen a single sweat patch. Even the smell is gone!"
Verified
Malcolm, Geelong
"I work as a real estate agent and I'd keep my blazer on on warm days to avoid showing sweat market. This shirt has changed my confidence and it's also very comfortable."
Verified
Amir, Sydney
"My wife had been nagging me for years to do something about my sweat problem. The stains were wrecking my business shirt. My friend recommended this - I bought 3 and now I wear it everyday to work"
Verified
Abdul, Parramatta
"I used to go through two shirts a day in summer. Now I just wear this undershirt and stay dry from morning to night. It’s been a total game-changer."
Verified
Christian, Sydney
"I’ve tried a few sweatproof shirts before, but this one is by far the most comfortable. The fabric is breathable, and it actually works in stopping sweat from showing. Worth every cent."
Verified
Leon, Newcastle
"This shirt fits me better than many of the other shirt I have in the wardrobe. The fabric feels great and wraps around my body nicely. Well done Layerone, I'm impressed"
Verified
Leslie, Logan
"I'm 6.2" and this shirt doesn't feel short at all. I work as an Accounts Manager, so I'm always on the road. This shirt has kept me dry and reduced my dependence on deodorant to smell fresh"
Verified
Dev, Perth
“I wore this undershirt from the office straight to the gym - 12 hours later, still no sweat patches and no smell. It handled a full workday and a workout without breaking a sweat (literally). I’m genuinely impressed.”
Verified
Brian, Melboune
"I'm a pretty hair guy, so I sweat a fair bit. I would buy the undershirts from Target, but they never kept my area dry. This shirt has helped me stay dry and smelling fine like never before."
Verified
Moe, Sydney
"This is my 2nd shirt. I bought one for my brother the other day as he sweats no matter the temperature. He loves it too. I should have bought a 3-pack to for a better deal!"
Verified
Sid, Gold Coast
"At first I thought the price was a bit much for an undershirt… but now I wear it 4–5 times a week. Worth every cent. Keeps me dry and saves my good shirts."
Verified
Don, Sydney
"One of the best undershirts I've tried in years. Stops back and underarm sweat stains"
Verified
Sebastian, Cairns
"I was sceptical at first, but seeing is believing! Even after a long, hot day, there isn't a single sweat mark. The protection is great, and the shirt still feels light and comfortable. This is exactly what I’ve been looking for."
Verified
Josh, Melbourne
"I’ve lost count on how many light shirts I’ve ruined due to sweat marks. A mate told me to try LayerOne. A month in, and I haven’t seen a single sweat patch. Even the smell is gone!"
Verified
Malcolm, Geelong
"I work as a real estate agent and I'd keep my blazer on on warm days to avoid showing sweat market. This shirt has changed my confidence and it's also very comfortable."
Verified
Amir, Sydney
"My wife had been nagging me for years to do something about my sweat problem. The stains were wrecking my business shirt. My friend recommended this - I bought 3 and now I wear it everyday to work"
Verified
Abdul, Parramatta
"I used to go through two shirts a day in summer. Now I just wear this undershirt and stay dry from morning to night. It’s been a total game-changer."
Verified
Christian, Sydney
"I’ve tried a few sweatproof shirts before, but this one is by far the most comfortable. The fabric is breathable, and it actually works in stopping sweat from showing. Worth every cent."
Verified
Leon, Newcastle
"This shirt fits me better than many of the other shirt I have in the wardrobe. The fabric feels great and wraps around my body nicely. Well done Layerone, I'm impressed"
Verified
Leslie, Logan
"I'm 6.2" and this shirt doesn't feel short at all. I work as an Accounts Manager, so I'm always on the road. This shirt has kept me dry and reduced my dependence on deodorant to smell fresh"
Verified
Dev, Perth
“I wore this undershirt from the office straight to the gym - 12 hours later, still no sweat patches and no smell. It handled a full workday and a workout without breaking a sweat (literally). I’m genuinely impressed.”
Verified
Brian, Melboune
"I'm a pretty hair guy, so I sweat a fair bit. I would buy the undershirts from Target, but they never kept my area dry. This shirt has helped me stay dry and smelling fine like never before."
Verified
Moe, Sydney
"This is my 2nd shirt. I bought one for my brother the other day as he sweats no matter the temperature. He loves it too. I should have bought a 3-pack to for a better deal!"
Verified
Sid, Gold Coast
"At first I thought the price was a bit much for an undershirt… but now I wear it 4–5 times a week. Worth every cent. Keeps me dry and saves my good shirts."
Verified
Don, Sydney
"One of the best undershirts I've tried in years. Stops back and underarm sweat stains"
Verified
Sebastian, Cairns
"I was sceptical at first, but seeing is believing! Even after a long, hot day, there isn't a single sweat mark. The protection is great, and the shirt still feels light and comfortable. This is exactly what I’ve been looking for."
Verified
Josh, Melbourne
"I’ve lost count on how many light shirts I’ve ruined due to sweat marks. A mate told me to try LayerOne. A month in, and I haven’t seen a single sweat patch. Even the smell is gone!"
Verified
Malcolm, Geelong
"I work as a real estate agent and I'd keep my blazer on on warm days to avoid showing sweat market. This shirt has changed my confidence and it's also very comfortable."
Verified
Amir, Sydney
"My wife had been nagging me for years to do something about my sweat problem. The stains were wrecking my business shirt. My friend recommended this - I bought 3 and now I wear it everyday to work"
Verified
Abdul, Parramatta
"I used to go through two shirts a day in summer. Now I just wear this undershirt and stay dry from morning to night. It’s been a total game-changer."
Verified
Christian, Sydney
"I’ve tried a few sweatproof shirts before, but this one is by far the most comfortable. The fabric is breathable, and it actually works in stopping sweat from showing. Worth every cent."
Verified
Leon, Newcastle
"This shirt fits me better than many of the other shirt I have in the wardrobe. The fabric feels great and wraps around my body nicely. Well done Layerone, I'm impressed"
Verified
Leslie, Logan
"I'm 6.2" and this shirt doesn't feel short at all. I work as an Accounts Manager, so I'm always on the road. This shirt has kept me dry and reduced my dependence on deodorant to smell fresh"
Verified
Dev, Perth
“I wore this undershirt from the office straight to the gym - 12 hours later, still no sweat patches and no smell. It handled a full workday and a workout without breaking a sweat (literally). I’m genuinely impressed.”
Verified
Brian, Melboune
"I'm a pretty hair guy, so I sweat a fair bit. I would buy the undershirts from Target, but they never kept my area dry. This shirt has helped me stay dry and smelling fine like never before."
Verified
Moe, Sydney
"This is my 2nd shirt. I bought one for my brother the other day as he sweats no matter the temperature. He loves it too. I should have bought a 3-pack to for a better deal!"
Verified
Sid, Gold Coast
"At first I thought the price was a bit much for an undershirt… but now I wear it 4–5 times a week. Worth every cent. Keeps me dry and saves my good shirts."
Verified
Don, Sydney
"One of the best undershirts I've tried in years. Stops back and underarm sweat stains"
Verified
Sebastian, Cairns
"I was sceptical at first, but seeing is believing! Even after a long, hot day, there isn't a single sweat mark. The protection is great, and the shirt still feels light and comfortable. This is exactly what I’ve been looking for."
Verified
Josh, Melbourne

We’re confident you’ll love how LayerOne fits, feels, and performs.
If it’s not right for you, simply return or exchange it within 30 days.
Sweat protection without the bulk.
LayerOne combines soft Lenzing® MicroModal with targeted sweat protection in the areas that need it most.
Lightweight and breathable
Soft MicroModal keeps the rest of the shirt light and comfortable.
Slim under your clothes
Designed to sit close to the body without bunching or showing through. For the tightest seal, size down if you're between sizes. Snug = disappears.
Made for all-day wear
Stretchy, soft and comfortable enough to wear from morning to night.
Most solve one part of the problem well. LayerOne was designed to bring everything you want in a sweatproof undershirt together.
Most don't
Some
Some
Average rating 4.7
The shirt's given me a lot more confidence heading into client meetings. Even when I start sweating, nothing shows through my shirt anymore.
Joseph T,
24/05/2026
I wasn’t expecting the fabric to feel this soft and breathable while still blocking sweat. It’s become part of my daily rotation now that the mornings are cooler and afternoons still warm.
Anthony A,
30/04/2026
I’ve always hated how sweat and body odour linger in my clothes, but these have made a massive difference. I can wear my outer shirts longer and still feel fresh.
Justin M,
03/04/2026
The weather’s been all over the place lately, and this undershirt has been perfect for staying comfortable without overheating. Honestly feels like a second skin under my work shirts.
Cam M,
20/03/2026
Autumn usually means layering up and sweating the moment I walk indoors, but LayerOne has completely fixed that for me. No more visible sweat patches during work meetings.
Allister C,
06/03/2026
I was sceptical at first as I tried many other shirt before, but this one really works. It kept my sweat from showing and the fabric feels premium.
Richard L,
28/02/2026
Super comfortable and genuinely invisible under my dress shirts. No sweat patches, even on hot days
George M,
15/02/2026
Wasn’t sure at first, but it does exactly what it says. After a few wears, I’ve stopped reaching for my old undershirts.
Archie L, Newcastle
15/01/2026
Wore this to work and then straight out after - stayed dry the whole time. Didn’t feel bulky or noticeable at all.
Eric Q, Adelaide
30/12/2025
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
12/12/2025
Big presentations used to stress me out because of sweat. LayerOne keeps me dry so I can focus on the client.
Mark A, Melbourne
11/11/2025
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. Neither of us are complaining
Tom R, Sydney
28/09/2025
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
03/09/2025
The material is super soft and light — it doesn’t feel bulky under my work shirts. I run warm even in winter, and this has helped me stay fresh without needing to peel layers off mid-day. Only wish I had found this sooner.
Mason T, Canberra
27/07/2025
Keeps me from sweating under my coat during cold commutes. I can simply wash the undershirt without having to wash my outer garments as often. Great if you're trying to protect your clothes
James Y
09/07/2025
I suffer from hyperhidrosis. Wife said, "you're not sweating through your shirts anymore... and you don't smell!" Enough said.
Rajesh S, Newcastle
08/06/2025
Works as described. Took a bit to get used to the feel.
Mohammad C, Sydney
14/05/2025
I bought a 3 pack and worn them everyday for the past 3 months. Even after so many washes, the shirt retains is shape and feel
Oscar P, Melbourne
09/06/2025
Great for this time of year breathes well and manages the heat from inside offices. Great protection for the underarms and back where I sweat most
Jack Y
03/05/2025
You can get a cheap undershirt from target, but it's not going to keep you dry. I made the switch and haven't looked back. I bought 1 shirt to try, now I will get the 3 pack
Alan R, Brisbane
26/04/2025
I used to get anxious before big presentations, not because of nerves — but because I knew my shirt would be soaked by the end of it. Since switching to LayerOne, I’ve gone through entire pitch days without a single sweat mark. It fits perfectly under my dress shirt and gives me one less thing to stress about.
Archie G, Adelaide
26/03/2025
I have been wearing the undershirts from Kmart for years and decided to make a shift and forked out some money for LayerOne 'cos I saw it on my social. I've been converted - the underarm and... even the back protection is amazing! Going to get a few more to complete my work week.
Aidan T, Wollongong
03/03/2025
The fit is great under shirts, but I'd recommend sizing up if you're in between.
Chris M, Hobart
15/02/2025
I do love these shirts. Unfortunately when I bought them, they were out of stock... took me a few weeks to receive my 3-pack
Sergei H, Sydney
01/02/2025
More expensive than my usual undershirts but 100% worth it!
Jason M, Sydney
24/01/2025
Did the job well just wish there were more colour options.
Lance L, Melbourne
16/01/2025
Definitely better than department store undershirts and does what it says, but not life-changing.
Henry L, Perth
16/12/2024
I wore this during a scorcher in January and didn't sweat through once. Hands down the best undershirt I've ever owned.
William T, Sydney
09/12/2024
Commuted across Perth in 34-degree heat and stayed completely dry. I don't remember that happen to me before
Stephen S, Perth
01/12/2025
It was my first time trying this shirt and I didn't know if it would work. It handled the surprise 28-degree day last week like a pro.
David P, Melbourne
12/11/2025
Does the job, I just wish it was a bit more affordable.
Ethan O, Brisbane
27/10/2024
The fabric is super stretchy and feels great on my body. Definitely does what it says it does. I bought my brother a shirt yesterday
Mudit G, Melbourne
09/10/2024
Spring a weird season where the temps go up and down. This shirt is my go to each day without fail
Isaac L, Perth
28/09/2024
I got the wrong size shirt, reached out to Support and they exchanged a new one right away. No complaints!
Huang W, Melbourne
09/09/2024
Robert H, Sydney
25/08/2024
A wore this shirt to work and to the gym for a total of 12 hours. It kept me dry all day. I didn't get any complaints from my girlfriend about any smells
Ryan S, Hobart
13/08/2024
Fits well! Love this shirt. Extra length for us long torso’d ones. Comfortable material, no sweat show. I need another one
Ranjit S, Gold Coast
31/07/2024
I recently tried Layerone's sweat/odour proof undershirt, and overall, I’m impressed with its performance. This shirt is designed to keep sweat from showing through, which is a big deal if you have hyperhidrosis or tend to sweat more than usual.
Ricky S, Adelaide
20/07/2024
I wear it under my winter clothes and haven't had a clammy day yet.
Justin K, Sydney
03/07/2024
Really appreciate the extra length, which works well for a tall guy like me, but it fits tighter than expected. Might just be my body type...
Max Y, Melton
25/06/2024
Frequently Asked Questions
Yes. Hidden panels under the arms and across the upper back block sweat before it ever reaches your shirt - even on light colours.
Not at all. LayerOne is made from feather-light, breathable Micro-Modal that feels cooler than cotton. You’ll stay dry without feeling bulky.
Yes. SILVADUR™ silver ions are built into the fabric to fight odour-causing bacteria, wash after wash.
Go with your usual slim-fit tee size. Between sizes? We suggest sizing down for the best sweat protection.
No. The slim, tapered fit and low neckline mean it disappears under any dress shirt or polo.
You’re covered. Try LayerOne for 30 days. If you’re not drier, fresher, and more comfortable, send it back for a full refund.
More questions? See our full FAQ