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feel your best

wear a Numi undershirt

stops 100% of sweat stains*

Absorbs moisture & odor

Lightweight& breathable

4-way
stretch

A person with long dark hair poses with one arm raised, wearing The Signature Undershirt by Numi in light beige, and looking off to the side.
A woman with long dark hair stands facing forward, wearing a light beige short-sleeve top and light brown pants against a plain background. Her Signature Undershirt by Numi ensures she stays comfortable even in the heat, thanks to its sweat-proof design.
A person with long, dark hair is shown from the back wearing The Signature Undershirt in light pink and matching bottoms from Numi against a plain background.
A woman wearing The Signature Undershirt from Numi, a gray fitted t-shirt featuring a hip length, sweat-proof material, reversible neckline, short seamless sleeves with a raw edge, and a slim fit ideal for layering.
Image split in half: the left side features a close-up of The Signature Undershirt's beige sweat-proof underarm shield by Numi in action, while the right side shows a model wearing a beige top. Text highlights product benefits like effective sweat protection, exceptional comfort, and versatile heat-friendly layering options.
Close-up of The Signature Undershirt by Numi in beige, with text detailing features: sweat-proof, all-day comfort, lightweight, 4-way stretch, thermo-regulating material to manage heat, and a durable design to prevent shrinking and fading.
Comparison chart showing Numi's The Signature Undershirt vs. Other T-Shirts. The Signature Undershirt by Numi features built-in underarm shields to stop sweat stains and odors, provides comfortable invisible shields, has seamless sleeves, and is made from breathable fabric.
A person with long dark hair poses with one arm raised, wearing The Signature Undershirt by Numi in light beige, and looking off to the side.
A woman with long dark hair stands facing forward, wearing a light beige short-sleeve top and light brown pants against a plain background. Her Signature Undershirt by Numi ensures she stays comfortable even in the heat, thanks to its sweat-proof design.
A person with long, dark hair is shown from the back wearing The Signature Undershirt in light pink and matching bottoms from Numi against a plain background.
A woman wearing The Signature Undershirt from Numi, a gray fitted t-shirt featuring a hip length, sweat-proof material, reversible neckline, short seamless sleeves with a raw edge, and a slim fit ideal for layering.
Image split in half: the left side features a close-up of The Signature Undershirt's beige sweat-proof underarm shield by Numi in action, while the right side shows a model wearing a beige top. Text highlights product benefits like effective sweat protection, exceptional comfort, and versatile heat-friendly layering options.
Close-up of The Signature Undershirt by Numi in beige, with text detailing features: sweat-proof, all-day comfort, lightweight, 4-way stretch, thermo-regulating material to manage heat, and a durable design to prevent shrinking and fading.
Comparison chart showing Numi's The Signature Undershirt vs. Other T-Shirts. The Signature Undershirt by Numi features built-in underarm shields to stop sweat stains and odors, provides comfortable invisible shields, has seamless sleeves, and is made from breathable fabric.
Color

The Signature Undershirt

$70.00
The Square Neck Cap Sleeve Undershirt - Numi
The Square Neck Cap Sleeve Undershirt - Numi
The Square Neck Cap Sleeve Undershirt - Numi
The Square Neck Cap Sleeve Undershirt - Numi
The Square Neck Cap Sleeve Undershirt - Numi
The Square Neck Cap Sleeve Undershirt - Numi
The Square Neck Cap Sleeve Undershirt - Numi
The Square Neck Cap Sleeve Undershirt - Numi
Color

The Square Neck Cap Sleeve Undershirt

$70.00
A woman wearing Numi's sweat-proof light pink
Rear view of a person with long dark hair wearing The Crop Undershirt by Numi in light pink, paired with beige leggings, standing against a plain background.
Person with long dark hair wearing a white Numi Crop Undershirt and light brown pants, standing against a plain background.
A person with long dark hair is seen from behind wearing The Crop Undershirt by Numi, paired with beige pants against a plain background.
A woman wearing a black pair of pants and
A woman wearing the Numi Crop Undershirt in beige demonstrates its sweat-proof, odor-resistant underarm shields. Icons highlight the fabric's sweat and stain protection, comfort, cost-saving benefits, and suitability for layering.
The Crop Undershirt - Numi
The Crop Undershirt - Numi
A woman wearing Numi's sweat-proof light pink
Rear view of a person with long dark hair wearing The Crop Undershirt by Numi in light pink, paired with beige leggings, standing against a plain background.
Person with long dark hair wearing a white Numi Crop Undershirt and light brown pants, standing against a plain background.
A person with long dark hair is seen from behind wearing The Crop Undershirt by Numi, paired with beige pants against a plain background.
A woman wearing a black pair of pants and
A woman wearing the Numi Crop Undershirt in beige demonstrates its sweat-proof, odor-resistant underarm shields. Icons highlight the fabric's sweat and stain protection, comfort, cost-saving benefits, and suitability for layering.
The Crop Undershirt - Numi
The Crop Undershirt - Numi
Color

The Crop Undershirt

$65.00
A person with short dark hair and fair skin is wearing The Lace Undershirt by Numi, a white sweat-proof short-sleeve top, paired with beige pants, standing against a plain backdrop.
A woman with short dark hair is standing with her back turned, wearing a white, sweat-proof undershirt called The Lace Undershirt from Numi and light brown shorts against a plain background.
A woman in
A person with long dark hair is wearing The Lace Undershirt by Numi in beige, paired with matching sweat-proof pants, and standing against a plain light background.
A person with long dark hair, wearing a beige short-sleeve top over The Lace Undershirt by Numi and light brown pants, viewed from the back against a plain light background.
A woman wearing The Lace Undershirt by Numi, featuring short cap sleeves, a reversible neckline, a slim fit perfect for layering as an undershirt, and elegant lace trim detailing.
Image showing a woman wearing The Lace Undershirt by Numi in light beige. Features highlighted include sweat-proof and stain protection, all-day comfort, time and money savings, and easy layering. Text at bottom reads:
The Lace Undershirt - Numi
The Lace Undershirt - Numi
A person with short dark hair and fair skin is wearing The Lace Undershirt by Numi, a white sweat-proof short-sleeve top, paired with beige pants, standing against a plain backdrop.
A woman with short dark hair is standing with her back turned, wearing a white, sweat-proof undershirt called The Lace Undershirt from Numi and light brown shorts against a plain background.
A woman in
A person with long dark hair is wearing The Lace Undershirt by Numi in beige, paired with matching sweat-proof pants, and standing against a plain light background.
A person with long dark hair, wearing a beige short-sleeve top over The Lace Undershirt by Numi and light brown pants, viewed from the back against a plain light background.
A woman wearing The Lace Undershirt by Numi, featuring short cap sleeves, a reversible neckline, a slim fit perfect for layering as an undershirt, and elegant lace trim detailing.
Image showing a woman wearing The Lace Undershirt by Numi in light beige. Features highlighted include sweat-proof and stain protection, all-day comfort, time and money savings, and easy layering. Text at bottom reads:
The Lace Undershirt - Numi
The Lace Undershirt - Numi
Color

The Lace Undershirt

$70.00
123

No Sweat Stains? How?

Secret Sweat Proof Shields

Our undershirts have a discreet and ultra-comfortable underarm sweat protection shield. Crafted from Contemporary Cotton™, a unique technical fabric that absorbs sweat and resists odors, our shields employ a one-way moisture transfer system, effectively redirecting moisture and sweat away from the body and keeping your clothing fresh for longer.

Thermo-Regulating.
4-Way Stretch.

Stay ahead of sweat with our advanced technology. Crafted from 90% Thermo-Regulating Tencel™, a supremely soft, breathable, and lightweight fabric that maintains your body temperature, ensuring you stay cool and dry throughout the day. The addition of 10% Lycra® offers optimal 4-way stretch and unmatched comfort for the ultimate layering essential.

Looking your best has never been easier

The Signature Undershirt is discreetly designed, ensuring no bulges or seams are visible under your clothing. You can confidently wear any outfit, knowing that your secret weapon is providing the perfect base-layer for a flawless appearance.

No Sweat Stains

Stay dry, confident, and stain-free with our unique cotton underarm shield. No more sweat stains, guaranteed.

Invisible Fit. 4-Way Stretch

Seamless sleeves and the ultra-soft four-way stretch fabric feels soft on the skin and works perfectly for layering

All Day Comfort

A long lasting & breathable fabric keeps you dry & cool all day long, no matter what life throws at you

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Effortless Confidence

Stain Resistant Silk

Stain Resistant to water based liquids

lightweight
yet durable

Machine-Washable,
dryer safe

timeless
designs

The Florence T-Shirt Blouse - Numi
The Florence T-Shirt Blouse - Numi
The Florence T-Shirt Blouse - Numi
The Florence T-Shirt Blouse - Numi
The Florence T-Shirt Blouse - Numi
The Florence T-Shirt Blouse - Numi
The Florence T-Shirt Blouse - Numi
The Florence T-Shirt Blouse - Numi
Color

The Florence T-Shirt Blouse

$100.00
The Simone Button-Up Blouse - Numi
The Simone Button-Up Blouse - Numi
The Simone Button-Up Blouse - Numi
The Simone Button-Up Blouse - Numi
The Simone Button-Up Blouse - Numi
The Simone Button-Up Blouse - Numi
The Simone Button-Up Blouse - Numi
The Simone Button-Up Blouse - Numi
Color

The Simone Button-Up Blouse

$220.00
Silk Duo Set
Silk Duo Set
Silk Duo Set
Silk Duo Set
Silk Duo Set
Silk Duo Set
Silk Duo Set
Silk Duo Set
Silk Duo Set
Silk Duo Set
Silk Duo Set
Silk Duo Set
Silk Duo Set
Silk Duo Set

Silk Duo Set

$140.25
Classic Silk Set
Classic Silk Set
Classic Silk Set
Classic Silk Set
Classic Silk Set
Classic Silk Set
Classic Silk Set
Classic Silk Set
Classic Silk Set
Classic Silk Set
Classic Silk Set
Classic Silk Set
Classic Silk Set
Classic Silk Set
Classic Silk Set
Classic Silk Set

Classic Silk Set

$242.25
1

Easy Wear, Easy Care

Seriously
Stain-Resistant

All our silks are crafted with Schoeller bluesign® certified stain-resistant technology, making coffee and red wine stains a thing of the past.

Machine Washable

We’ve said goodbye to the dry cleaners. All our Sustainable Silk™ is machine washable and dryer safe. Just wash in cold water, tumble dry on low – it's that simple

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Hear from Our satisfied Customers

“I bought 2 of the Simone blouses in black and white.  The size helper recommended a size M and it fit perfectly.  Will look great alone, under a jacket or sweater, in both casual and work situations.  And best yet -- I can wash this at home!  Excellent purchase.”

Kara M.

✓ Verified Purchase

I Love the fit and materials of my Numi classic shirt. It really protects the outerwear sweaters and jackets and other long sleeves from my sweat.. That says a lot.!!

Brooke L.

✓ Verified Purchase

 ”Love it! I don’t need to worry about wearing white to work. If I spill my coffee I know it will come out.”

D. Wilson

✓ Verified Purchase

I had a blouse that showed perspiration stains - it was frustrating to use adhesive pads. I am beyond happy with my signature undershirt. It is lightweight, comfy and works to prevent perspiration stains, just as advertised. Best part? Canadian company and made in Canada!

Alison T.

✓ Verified Purchase

“The cut of this blouse is so well designed it makes me look chic and put together instantly, and it has 4 buttons so it feels so luxurious! I'm SO happy to finally have a silk blouse that I can wash easily and not have to worry about stains. If you're looking for the perfect blouse for your wardrobe, this is the ONE.”

Adela L.

✓ Verified Purchase

Bought this to wear under sweaters and it is perfect! Soft, stretchy and comfy. I’ll be buying more.

Leslie B.

✓ Verified Purchase

FAQs

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