"It’s rare to find something that delivers exactly as promised. No sweat marks, period."
“It’s now part of my daily routine. Highly recommend"
"Wore it under my suit during a summer wedding – stayed dry all day. Best investment I’ve made for my comfort."
"I used to avoid light-coloured shirts in general. Now I wear them confidently thanks to this undershirt."
"Even after a full day of meetings, the shirt stayed fresh and odour-free. Game changer."
"The fit is spot on – slim enough to stay hidden, but comfortable enough to wear all day."
"I’m a teacher and move around a lot during the day. Finally, no more underarm patches by lunchtime."
"Humidity up here is no joke, but this undershirt kept me dry the whole workday."
"Never thought an undershirt could boost my confidence so much. Feels good knowing I look fresh."
"No more pit stains in photos – my wife’s thrilled for our next event."
"Great for long drives in the heat. Arrived at my meeting looking like I just left home."
"It doesn’t bunch up under my shirt, even when I’m moving around. Comfort level: 10/10."
"I use to sweat through my blazer before presentations – now I don’t even think about it."
"Perfect for layering in winter too – keeps me warm without overheating indoors."
"The V-neck design means I can wear it with an open collar and no one notices."
"Was worried it’d feel restrictive, but it’s so light I forget I’m wearing it."
"No more carrying spare shirts to the office. This is my daily go-to now."
"I’m a groomsman next month and already know I’ll be wearing this under my suit."
"Fit is snug without being tight – sits perfectly under slim-fit shirts."
"Finally, an undershirt that actually keeps up with our Aussie summers."
Save with our best value 5-pack! From Monday to Friday, you’ll always have a fresh LayerOne ready - no mid-week laundry, no compromises.
You can mix and match sizes to suit you and others — keep a full rotation for yourself, or share one with mates or family.
For men who sweat, plan ahead, and demand the best - this pack is designed to keep you dry, sharp, and confident every single day of the week.
Why men are making the switch:
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!
Your time is valuable - and so is your confidence. That’s why we deliver your LayerOne undershirt free, fast, and tracked to your door.
Because premium products deserve premium service.
"I used to keep a spare shirt at work. Now I just make sure I wear my LayerOne" – Ben M, Sydney"
First Product Confidence Guarantee
We’re confident LayerOne will outperform every undershirt you’ve worn. That’s why your first shirt is backed by our 30-Day Confidence Guarantee.
If it doesn’t keep you drier, fresher, and more comfortable, send it back for a full refund or size exchange. No stress, no hassle.
Fast & Free Shipping
30-Day Money-Back Guarantee
Secure checkout
Australian-Owned Business
Over 1000 Happy Customers
Sweat & Odour Proof Technology
Dual-layer panels under the arms and back block sweat before it ever reaches your outer shirt. No stains, no stress - whether it’s a packed commute, a big meeting, or a night out.
Infused with SILVADUR™ silver ions, the fabric actively fights odour-causing bacteria. That means you stay fresher for longer, without relying on sprays or gimmicks.
Designed to contour cleanly to your body without bunching or bulk. Disappears under any dress shirt, so all anyone sees is sharp, confident style.
What men noticed most:
99% noticed fewer visible sweat marks
94% said their dress shirts lasted longer
91% felt more confident wearing light colours
(Based on customer feedback after 30 days.)
Most undershirts stop at the armpits. LayerOne protects the upper back too.
Odour-Resistant Fabric
Infused with SILVADUR™ silver ions to block odour-causing bacteria. Built in, not sprayed on.
Built to Last
Premium Micro-Modal holds shape, softness, and performance wash after wash.
Purchase with confidence at LayerOne! If your order doesn't meet your expectations, return it within 30 days for a full refund
Exceptional Customer Service
Our team is here to help with sizing, fit, and any questions - before and after your purchase. Fast responses, real solutions, no runaround!
Designed in Australia. Ethically Made
Crafted from sustainable Lenzing® Micro-Modal. Luxuriously soft, breathable, and responsibly produced.
Tag-Free Comfort
No scratchy labels. Just smooth comfort where it counts, all day long.
1000+ Happy Customers
Excellent 4.7
Engineered From the Inside Out
Every detail of LayerOne’s construction is chosen to maximise performance, durability, and comfort.
Luxury Micro-Modal Blend – 95% Lenzing® Micro-Modal + 5% elastane - ultra-soft, breathable, and feather-light. Feels invisible under your shirt, but you’ll notice the comfort..
Sweatproof Barrier Technology – Hidden panels use a bamboo–cotton carrier with a waterproof polyurethane membrane. This blocks sweat at the source without sacrificing breathability.
Odour Control Built-In – Infused with SILVADUR™ silver ions that fight odour-causing bacteria from the inside out. Nothing sprayed on, nothing temporary..
Skin-Friendly & Safe – OEKO-TEX® 100 certified - free from harmful substances and safe for sensitive skin. Wear it every day with confidence.
Eco-Responsible Design – Made from sustainably sourced beechwood fibres and produced under ethical standards. Good for you, and better for the planet.
Comfort Meets Performance
Comfort Meets Performance
Comfort Meets Performance
Comfort Meets Performance
Comfort Meets Performance
Comfort Meets Performance
Comfort Meets Performance
Comfort Meets Performance
Comfort Meets Performance
Comfort Meets Performance
Comfort Meets Performance
Comfort Meets Performance
Comfort Meets Performance
Comfort Meets Performance
Comfort Meets Performance
Comfort Meets Performance
Comfort Meets Performance
Comfort Meets Performance
Comfort Meets Performance
Comfort Meets Performance
Proof, Not Promises.
See the sweatproof barrier in action - water rolls off, your shirt stays spotless.
LayerOne is built for long days, hot commutes, and big moments. Stay composed and in control, no matter what the day throws at you.
LayerOne vs Other Brands
When it comes to sweatproof undershirts, the difference is clear.
LayerOne is built for Aussie professionals who expect more from their first layer - and we don’t cut corners.
Stay dry all day - no matter the heat or pressure
No visible sweat marks - ever
Blocks odour before it starts
Slim fit that disappears under any shirt
Built to last - holds shape, wash after wash
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.
More questions? See our full FAQ
