Get 20% Off Your First Purchase

Use Code: SWEAT20 at Checkout

"Amazing Invention, Absolutely Essential."
AlmondSignature-1800x1800.png__PID:c13a1c9d-979e-4628-b2e6-356512d44e6e

DESIGNED TO ELIMINATE SWEAT STAINS

Experience the unmatched comfort and confidence of Numi undershirts. Meticulously engineered with our exclusive Contemporary Cotton™ sweat-proof shield technology, say goodbye to sweat stains and odors. 

Our shields keep your clothes pristine, by protecting them from unwanted stains and deodorant marks, so you stay fresh and dry all day. 

Crafted from Tencel, our 4-way stretch fabric guarantees luxurious softness, a comfortable fit, and ultimate breathability.

UNDERWHELMED WITH REGULAR T-SHIRTS AS YOUR BASE LAYER?

Us too. Uncomfortable, bulky fits and cardboard-like fabrics, along with sweat marks and permanent stains on our clothes just didn't cut it.

SO WE CREATED YOUR NEW FAVORITE UNDERSHIRT

Driven by our passion for solving wardrobe dilemmas with cutting-edge technology, we crafted the perfect undershirt – the Signature.

Engineered for top-notch sweat and stain protection, unmatched comfort, and durability, it's sure to become your wardrobe essential. No shrinking, fading, or loss of shape, just lasting quality wear after wear.

How We Compare

EFFECTIVE SWEAT-PROOF TECHNOLOGY

  • Stops sweat stains
  • Absorbs moisture & odor away from your body
  • Keeps clothes dry and clean
  • Say goodbye to  embarrassing sweat stains

ULTRA SOFT, LIGHTWEIGHT AND COMFORTABLE

  • Keeps you cool and dry 
  • Breathable & Thermoregulating (90% Modal)
  • 4-way stretch (10% Lycra®)
  • Experience all day comfort 
"#color_almond| Emi is 5'7.5" and wears a size S

A FIGURE FLATTERING FIT 

  • Seamless, slim fit design
  • Invisible under clothing  
  • Fitted but never tight 
  • Available in 6 styles, 7 colors for any outfit

Customer Reviews

Definitely no sweat stains. Light as a feather feel, you'll forget you have it on.

Maria Y

Sweat-Proof Technology That Works

Use Code: SWEAT20

Get 20% Off Your Purchase

The Signature Undershirt - Numi
The Signature Undershirt - Numi
The Signature Undershirt - Numi
The Signature Undershirt - Numi
The Signature Undershirt - Numi
The Signature Undershirt - Numi
The Signature Undershirt - Numi
The Signature Undershirt - Numi

#1 Best Seller

The Signature Undershirt

$65.00

Use code: NOSWEAT for 20% off at checkout

$52 $65

Elevate Your Outfit: Say Hello to the Better Base Layer

Meet our #1 best seller, The Signature. This OG undershirt is the ultimate base-layer for every outfit. No more sweat-stains or deodorant marks – stay fresh and feel clean all day with this game-changer. With 250,000+ sold worldwide, The Signature Undershirt is the real deal.

*Based on moderate to heavy sweaters

✓ Free Shipping on orders $150+
✓ 30-Day Money Back Guarantee

STOPS SWEAT STAINS

ABSORBS MOISTURE & ODOR

LIGHTWEIGHT & BREATHABLE

4-WAY STRETCH

FitsTrueToSize-100x100.png__PID:7ca3a884-dc8b-499c-b177-0dfb3d5d5c6c

FITS TRUE TO SIZE