null
icon/truck

Free Domestic Shipping Over $50

icon/box

Free Returns

icon/flag

Made in the USA

Men's Sweat Proof Undershirt - Original Fit Crewneck

Men's Sweat Proof Undershirt - Original Fit Crewneck

Sweat Proof Guarantee
Sweat Proof Guarantee
$28.99

Free Domestic Shipping Over $50 Shipping Information

The Original Thompson Tee Sweat Proof Undershirt

Our classic, best selling men's crew neck undershirt features patented sweat proof technology that stops sweat in its tracks. Say goodbye to sweat marks, stains and underarm odor!

Thompson Tee sweat proof undershirts are 100% made in the USA and backed by our sweat proof guarantee.

Wear the Thompson Tee original fit crewneck beneath your outfits and gain the confidence to tackle any sweaty situation without fear of wet marks!

Patented Sweat Proof Technology for Crewnecks

Patented, Sweat Proof Technology

Layered

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

Seam

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

Washing

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

Crewneck Shirt Features
Feature 1

Ultra-Soft, Premium Cotton

The Thompson Tee original fit crew neck undershirt is made of 100% premium combed USA cotton for a comfortable and luxurious feel.

Feature 2

Tagless, lay flat collar

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

Feature 3

Machine washer and dryer safe

Machine wash Thompson Tee sweat proof undershirts in cold or warm water and dry on medium (or lower) heat.

Tuckable Crewneck TShirt

Long, Tuckable Length That Stays Put

Move through your day freely. Our men's original fit crew neck undershirt has a long, tuckable length that stays in place all day. So go ahead and wave those arms around!

Customers Also Viewed

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 styles fit like a traditional undershirt. If you want more of a looser, t-shirt fit, order up one size.

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
XS S M L XL 2XL 3XL
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?

Reviews