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

Regular price $65.00 Sale price $45.50 USD
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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.

Why Pre-order?

Minimizing our impact on the environment and maximizing our impact in our community is woven into the fabric of our business. We think fashion should enhance the planet, not pollute it. Pre-orders reduce unnecessary waste caused by unsold inventory. The Signature in Black in Small & Medium ships December 17.

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 $150. All full-priced U.S. orders are eligible for free returns within 30 days of your delivery date. 

Holiday Deadlines

For delivery by 12.24 please place your order by:

11.25 for International Shipping 

12.13 for US Shipping Ground | 12.20 for Priority

12.14 for (most) Canadian Locations

Items purchased at 20% off and above are final sale. Find out more about our return policy here.

Customer Reviews

Based on 593 reviews
78%
(465)
19%
(111)
2%
(14)
0%
(1)
0%
(2)
A
Annah R.
Which size did you purchase?: XS
How was the fit?: True to Size
Reason for Purchase: Functional: for preventing sweat stains
Signature

Love the Signature t-shirt. Fits great, is comfortable, and prevents sweat stains (now I also don't have to wash my sweaters as much, yay!). Overall, great product and I will be getting additional shirts!

One minor comment, not directly related to the shirt, but I would rather the shirt be a bit cheaper and not come in a fancy bag with a zipper. What am I going to do with that bag? And when I order another shirt, then I'll have another zippered bag that I don't know what to do with. Knock $5 off the shirt and just send it wrapped in paper or something!

V
VIRGINIA B.
Which size did you purchase?: S
How was the fit?: True to Size
Reason for Purchase: Functional: for preventing sweat stains

The Signature

M
Margot S.
Which size did you purchase?: M
How was the fit?: True to Size
Reason for Purchase: Functional: for preventing sweat stains
LOVE IT, BUY IT NOW

Why did I wait so long to buy these? And why didn't I buy one for every day of the week when I finally did?! Please don't wait like I did, you will not be disappointed. The fit is perfect and discreet, the neckline works for all my purposes, and it gives me so much confidence and an ability to relax. 10 out of 10!

K
Kara S.
Which size did you purchase?: S
How was the fit?: True to Size
Reason for Purchase: Functional: for preventing sweat stains
Wardrobe must-have

These shirts are life changing. I’m already planning to purchase more so that I have one for every day of the work week. Whether you want to prevent sweat stains (like me) or just have an extra layer, the Numi signature undershirt is the way to go. They’re comfortable (soft, lightweight), well designed (don’t roll up at the bottom or the sleeves), and functional (prevent sweat stains). Totally worth the investment.

A
Ada P.
Which size did you purchase?: M
How was the fit?: True to Size
Reason for Purchase: Everyday Essential: for comfort & style

Love it!

J
Joanna S.
Which size did you purchase?: L
How was the fit?: True to Size
Reason for Purchase: Functional: for preventing sweat stains
Love it!

Very comfortable and feels great underneath my sweaters.

J
Jennifer B.
Which size did you purchase?: M
How was the fit?: True to Size
Reason for Purchase: Functional: for preventing sweat stains
These undershirts are amazing

I've now ordered 5 undershirts in various styles and colors and plan to order 2 more. I'm a junior high teacher, so I'm up and moving around constantly, which makes me prone to sweat more. These undershirts totally control sweat and are thin enough that I can even wear them under fitted clothes. Total life changers :-)

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.

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.

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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