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Men's Sweat Proof Undershirt - Slim Fit V-neck

Men's Sweat Proof Undershirt - Slim Fit V-neck

Sweat Proof Guarantee
Sweat Proof Guarantee

Free Domestic Shipping Over $50 Shipping Information

Wear What You Want with our Slim Fit V-Neck Shirt

Sweat and yellow stains got you down? Thompson Tee's sweat proof slim fit V-neck undershirts are soft, comfortable and feature patented sweat proof technology that wins the war on wetness.

Thompson Tee's slim fit V-neck undershirt is invisible beneath most button-down shirts. This body-hugging undershirt offers both comfort and stealthy sweat and odor protection. Gain the confidence you need to tackle your interview, first date or everyday stress without worrying about sweat marks ever again!

Patented Sweat Proof Technology for Slim Fit V-Neck Shirts

Made with Patented, Sweat Proof Technology


Proprietary moisture wicking design stops sweat from showing through your underarms — period.


Center seam with separate front and back sweat panels offers a sleek, tailored fit and feel.


Hydro Shield sweat proof technology won't wash out or lose effectiveness over time. Prevent pit stains day after day, wash after wash.

Slim Fit V-Neck Shirt Features
Feature 1

Ultra-Soft, Lightweight Material

Our men's slim fit V-neck undershirt contains 95% premium rayon from bamboo and 5% spandex for a smooth, body-hugging fit.

Feature 2

Tagless, lay flat collar

Itchy, scratchy tags are a thing of the past. Thompson Tee's tagless design ensures our shirts lay flat with no unsightly bunching.

Feature 3

Machine washer and dryer safe

Machine wash the slim fit V-neck undershirt in cold or warm water and dry on medium (or lower) heat.

Tuckable Slim Fit V-Neck TShirt

Long, Tuckable Length That Stays Put

Our slim fit V-neck undershirts feature a long, tuckable length that stays in place, allowing you to move through your day freely.

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Thompson Tee Guarantee

The Original Sweat Proof Undershirt

We're serious when we say no more pit stains. We guarantee sweat won't penetrate the underarm barrier -- or your money back!

Thompson Tee Guarantee

Free Returns

Wear it, wash it and try it. We offer free returns on all opened or used shirts up to 30 days from purchase date.

Thompson Tee Guarantee

Made in USA

Every phase of production is completed in the USA - from materials to manufacturing. Each undershirt purchase supports U.S. jobs and manufacturing.

Thompson Tee Guarantee

Real Customer Service

No web bots here. We have a team of friendly people ready to answer all of your questions.

Size Chart

XS Chest 32 in / 82 cm
S Chest 34 - 36 in / 86 - 92 cm
M Chest 38 - 40 in / 97 - 102 cm
L Chest 42 - 44 in / 106 - 112 cm
XL Chest 46 - 48 in / 115 - 122 cm
2XL Chest 50 - 52 in / 127 - 132 cm
3XL Chest 54 - 56 in / 137 - 142 cm
Chest - inches 32 34 - 36 38 - 40 42 - 44 46 - 48 50 - 52 54 - 56
Chest - cm 82 86 - 92 97 - 102 106 - 112 115 - 122 127 - 132 137 - 142

Faqs about our tees

How is the Thompson Tee different from other "sweat proof" shirts?
Original Fit vs Slim Fit: Which one is right for me?
Is the underarm barrier really sweat proof?
How does the sweat proof underarm barrier compare to sweat pads?