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"Amazing Invention, Absolutely Essential."

12 Reasons why Numi is the Ultimate Sweat-Proof Undershirt

Sweat Proof Underarm Shield Technology that Works

Say goodbye to embarrassing sweat stains with Numi's innovative underarm shields that effectively absorb moisture and prevent sweat from reaching your outer garments

Sweat, Moisture and Odor Control

Numi's shields wick away sweat and absorb moisture, keeping you dry and comfortable all day long, while the odor-resistant fabric ensures you stay fresh and confident.

Stain Protection for Clothes

Effortlessly maintain the appearance of your clothes with Numi undershirts, preventing deodorant marks and permanent sweat stains on your favorite garments.

All Day Comfort

Numi undershirts feature a breathable and lightweight fabric blend of 90% Thermo-Regulating Modal and 10% Lycra® for optimal comfort and flexibility, making them ideal for all-day wear. 4 way stretch makes it ultra comfortable.

Invisible Under Clothing for Easy Layering

Enjoy seamless, slim-fit designs that are virtually invisible under clothing for easy layering, allowing you to layer with ease and confidence. Whether you're wearing a blouse or a sweater, Numi undershirts provide a smooth and invisible base layer for a polished look.

This is NOT an Ordinary T-shirt:

Don't mistake it for an ordinary t-shirt—Numi undershirts are designed with advanced sweat-proof shields and materials to provide superior comfort and performance.

 Long-lasting Durability

Numi undershirts are shrink-resistant and fade-proof, ensuring they maintain their quality and appearance wash after wash. Our technology is embedded at the yarn stage, guaranteeing longevity and performance throughout the life of the garment.

More Confidence, Less Embarrassment

Experience all-day confidence with sweat and moisture under control, knowing that Numi undershirts provide reliable protection against sweat-related clothing issues. Enjoy peace of mind and less stress, allowing you to wear any color without fear of stains or embarrassment.

The Perfect Base Layer: 6 Styles, 7 Colors

Designed to be the ultimate base layer for any outfit, Numi undershirts offer both style and functionality. With six styles and seven colors to choose from, you can effortlessly elevate your wardrobe while staying protected and comfortable.Choose from a variety of styles to suit your wardrobe needs, from reversible necklines, cap sleeves to cropped lengths for a seamless look.

Save on Dry Cleaning Expenses & Time

Save money and time on dry cleaning by protecting your tops and blouses with Numi undershirts, allowing you to wear hard-to-care-for clothes collecting dust in your closet.  Bonus: Numi undershirts are easy to care for.

Risk-Free Trial with 30 Day Money Back Guarantee

Experience Numi's comfort risk-free with a 30-day guarantee, ensuring satisfaction or your money back.

Customer-Approved

With over 1000+ 5-star reviews, Numi undershirts are loved by satisfied customers worldwide for their exceptional quality and performance.

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
The Signature Undershirt - Numi
The Signature Undershirt - Numi
The Signature Undershirt - Numi
The Signature Undershirt - Numi
The Signature Undershirt
#color_BLACK
The Signature Undershirt
The Signature Undershirt
The Signature Undershirt - Numi
The Signature Undershirt
The Signature Undershirt - Numi
The Signature Undershirt - Numi
The Signature Undershirt - Numi
The Signature Undershirt - Numi
The Signature Undershirt
#color_BLACK
The Signature Undershirt
The Signature Undershirt

#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+
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STOPS SWEAT STAINS

ABSORBS MOISTURE & ODOR

LIGHTWEIGHT & BREATHABLE

4-WAY STRETCH

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FITS TRUE TO SIZE