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Men's Sweat Proof Long Sleeve Undershirt - Original Fit V-neck

Men's Sweat Proof Long Sleeve Undershirt - Original Fit V-neck

Sweat Proof Guarantee
Sweat Proof Guarantee

Free Domestic Shipping Over $50 Shipping Information

Sweat Proof Clothing for Colder Weather

Just because it's cold outside doesn't mean you sweat any less. Our long sleeve V-neck undershirts combine the best features of a luxury undershirt with patented sweat proof technology that stops armpit sweat in its tracks.

Wear your long sleeve Thompson Tee beneath your favorite button-down, uniform or scrubs to add an extra layer of warmth and keep your pits dry. The V-neck style is perfect if you’re looking for hidden sweat protection.

It's the same sweat proof technology you know and love, just made for colder weather.

Fit Details

The Thompson Tee Original Fit long sleeve, V-neck undershirt has the same fit and feel of a traditional undershirt.

Patented Sweat Proof Technology for Long Sleeve V-Neck Shirts

Patented, Sweat Proof Technology


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


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


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

Long Sleeve V-Neck Shirt Features
Feature 1

Ultra-Soft, Smooth Material

Our long sleeve V-neck undershirt is made from a blend of premium Supima cotton and Micromodal for a smooth, luxurious feel.

Feature 2

Tagless, Lay-Flat Collar

Itchy, scratchy tags are a thing of the past. Our tagless design ensures the Premium Undershirt lays flat with no unsightly bunching.

Feature 3

Machine washer and dryer safe

Thompson Tee with Hydro-Shield Sweat Proof Technology can be machine washed in cold or warm water and dried on medium (or lower) heat.

Tuckable Long Sleeve V-Neck Shirt

Long, Tuckable Length That Stays Put

Move through your day freely. Thompson Tee's long, tuckable length stays in place all day. So go ahead and wave those arms around!

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

The Thompson Tee Original Fit Long Sleeve Undershirt fits like a traditional undershirt. If you want a looser fit, size up one size.

XS Chest 32 in / 82 cm
Sleeve 21.25 in
S Chest 34 - 36 in / 86 - 92 cm
Sleeve 21.5 in
M Chest 38 - 40 in / 97 - 102 cm
Sleeve 21.75 in
L Chest 42 - 44 in / 106 - 112 cm
Sleeve 22 in
XL Chest 46 - 48 in / 115 - 122 cm
Sleeve 22.25 in
2XL Chest 50 - 52 in / 127 - 132 cm
Sleeve 22.5 in
3XL Chest 54 - 56 in / 137 - 142 cm
Sleeve 22.75 in
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
Sleeve Length - inches 21.25 21.5 21.75 22 22.25 22.5 22.75

Faqs about our tees

How is the Thompson Tee different from other "sweat proof" shirts?
Is the underarm barrier really sweat proof?
How does the sweat proof underarm barrier compare to sweat pads?

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