The Signature
The Signature
The Signature
The Signature
The Signature
The Signature
The Signature
The Signature
The Signature
The Signature
The Signature
The Signature
The Signature
The Signature
The Signature
The Signature
The Signature
The Signature
The Signature
The Signature
The Signature
The Signature
The Signature
The Signature
The Signature
The Signature
The Signature
The Signature

The Signature

$65.00 $61.75 USD
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Buy 2, Get $20 OFF

Free Shipping over $100 (After discounts, before shipping and taxes).

Reimagined Basics

Everyday styling should be easy. Our hero product was designed to liberate your wardrobe. You call it a game-changer, we call it a better base layer. Either way, it’s our top seller for a reason.

This October, we are donating $10 of all Pink products in our Essential Undershirt and Sustainable Silk™ Collections to The Breast Cancer Site Group at The Princess Margaret.

Our Essential Undershirt collection was designed to keep you feeling fresh and your clothes clean.

  • Absorbent underarm gusset with Contemporary Cotton Technology
  • Thermo-regulating TENCEL™
  • Invisible fit
  • Reversible neckline with a scoop or crew neck
  • Seamless sleeves
  • Made in Canada
  • 90% TENCEL™ is soft, breathable and keeps you cool and dry
  • 10% LYCRA® for optimal stretch and comfort
  • Fabric is responsibly knit and dyed in Canada
  • Machine wash cold, tumble dry low
Being mindful of our impact has always been at the core of what we do. This year we’re taking it further. We are in the process of auditing our impact. Stay tuned, we'll be sharing the results later this year.
Free shipping on U.S. and Canada orders over $100. All full-priced U.S. orders are eligible for free returns within 30 days of your delivery date. Some exclusions may apply, learn more here.

Customer Reviews

Based on 557 reviews
78%
(436)
19%
(104)
3%
(14)
0%
(1)
0%
(2)
A
Aurora L.
Which size did you purchase?: S
How was the fit?: True to Size
Reason for Purchase: Functional: for preventing sweat stains
Honestly life changing

Best product. So comfortable !!

L
Lauren
Which size did you purchase?: L
How was the fit?: True to Size
Reason for Purchase: Functional: for preventing sweat stains
Where have these been all my life?

These undershirts are a game changer. As a lifelong sweaty gal, I only wish I had had them back in junior high and high school! I don't worry about my pits when I wear these, and I'm able to wear tops more than once (previously unthinkable). They are definitely pricey, but also definitely worth it.

A
Anonymous
Which size did you purchase?: S
How was the fit?: True to Size
Reason for Purchase: Functional: for preventing sweat stains
*Game changer*

Sheer and utter brilliance! A thing of wonder!! Thank you Numi for creating something that actually works. I am en route to order my second Signature top!!

A
Amanda E.
Which size did you purchase?: XS
How was the fit?: True to Size
Reason for Purchase: Environmental: for less dry cleaning & washing
Excellent

Exactly what I needed for under a suit. I went up a size for comfort and because I put it in the dryer

A
Anna V.
Which size did you purchase?: M
How was the fit?: Snug
Reason for Purchase: Functional: for preventing sweat stains
Great fit and fantastic quality!

Amazing quality of the fabric, perfect fit and very functional. My two t-shirts came in a nice cloth bag, thoughtfully packaged with utmost care.

E
Emmanuelle R.
Which size did you purchase?: L
How was the fit?: True to Size
Reason for Purchase: Environmental: for less dry cleaning & washing
Loooooooove….

Soft feel, amazing comfort…. I want to purchase The signature in every colour….
Pssst: if you made t-shirts, I would gladly wear them.

J
Jess
Which size did you purchase?: M
How was the fit?: True to Size
Reason for Purchase: Functional: for preventing sweat stains
Can’t live without these

These have literally changed my “outfit” life and worth taking the time to write this review for anyone on the fence. Yes they are a bit pricey, but they SAVE my blouses and sweaters, I don’t have to wash them as often, I don’t sweat through them anymore and it gives me a tiny layer of warmth under thin blouses that I really like. It also hides bras lines a bit and I could go on and on. I now own 4 as I need one everyday through the Winter months. I will continue to buy them as needed. I am a size M and I buy a M, they fit snug as they should. I love the crop versions so I don’t have too much bulk with tucking in. I just bought my first longer one and I am loving it as well, but it is long so when you tuck it in it does add that extra layer, but I like it for when I have shorter sweaters, it covers my bare skin just as I want it too. I buy a color closest to my skin color. LOVE THESE!

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Explore Our Fabric Technology

Sustainable Silk™

Meet the easy wear, easy care Numi silk collection. Wear your silk whenever, however. Stylish pieces made from Numi's Sustainable Silk that look and feel beautiful and are free from the standard silk stresses like staining and dry cleaning.

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Contemporary Cotton™

Liberate your wardrobe.  The Essential Undershirt, a cult product that changes lives and dry cleaning bills.  Wear that favorite shirt without a care.  Sumptuously soft base layers that keep you feeling fresh and clean, today and tomorrow.

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Forward Thinking Materials

Functional fabrics designed to make your life easier and be kinder to the planet.

Contemporary Cotton™ is a high-performance moisture management system that moves moisture away from the body.  It keeps you cooler and drier.  And washes clean of odors. 

Sustainable Silk™ is a blend of Naia™ and silk. It is treated with bluesign® certified stain repellent technology making the garment stain resistant and machine washable.

learn more

About Numi

Numi was born out of personal necessity. One day our founder, Michelle, realized she never wore her favorite clothes. They were either prone to noticeable sweat stains or expensive to dry clean. When she looked for a solution, there was nothing available. And so Numi was born.

Numi is a brand that celebrates what it means to be a woman. We make consciously created products that make life a little easier for us all and inspire a culture of kindness.

our vision

Committed to Sustainability

Being mindful of our impact has always been at the core of what we do. We like to think of it as a living commitment that grows and evolves with us. This year we're taking it further. We are in the process of auditing ourselves to see how and where we can be kinder to the planet.

Learn more

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