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Men's Sweat Proof Military Shirt - Original Fit Crewneck

Thompson Tee Guarantee Sweat Proof Guarantee

25% off with code GIFT25

Men's Sweat Proof Military Shirt - Original Fit Crewneck

Thompson Tee Guarantee Sweat Proof Guarantee
$33.99

25% off with code GIFT25

Free Domestic Shipping Over $50 Shipping Information

30-Day Risk Free Returns Shipping Information

Get Unrivaled Sweat Protection with our Military Undershirt

The Thompson Tee military undershirt features hardcore sweat proof technology that blocks underarm sweat stains and odor. You can wear our military shirts under uniforms, dress shirts, fatigues or on its own.

Our military undershirts are available in navy, olive drab green, tan 499 and coyote brown. Each undershirt is made with 100% cotton and shipped from the USA.

Purchase our military undershirts with confidence: our sweat proof shirts are backed by a Sweat Proof Guarantee, so you can wear it and wash it for 30 days, risk-free.

Patented Sweat Proof Technology for Men's Original Fit Sweat Proof Military Shirts

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.

Men's Original Fit Sweat Proof Military Shirt Features
Feature 1

Ultra-soft, lightweight combed cotton

Thompson Tee military undershirts are made with 100% premium combed cotton.

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 our military undershirts in cold or warm water and dry on medium (or lower) heat.

Tuckable Men's Original Fit Sweat Proof Military Shirts

The Perfect Military Tuck Length

Move through your day without distractions and interruptions. Thompson Tee's military undershirts feature extra length so you get the perfect military tuck that stays in place all day.

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

Real Customer Service

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

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The Thompson Tee Original Fit undershirts are true to size, fitting like a regular undershirt. If you prefer a looser 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?

The Thompson Tee is the original sweat proof undershirt.

It's the only undershirt backed by a patent from the U.S. Patent and Trademark Office for our Hydro-Shield sweat proof technology, which completely absorbs and blocks sweat while maintaining breathability. Although others might say "sweat proof," no undershirt can protect you like the proven Thompson Tee, and no other shirt has patented technology to back up such a claim.

Here are a few of the features that make our sweat proof undershirts unique:

  • Proprietary layering and stitching system blocks sweat from seeping through your underarms.
  • Sweat proof technology won’t wash out or lose effectiveness over time.
  • Separate front and back panels to trap sweat effectively, minimize heat build-up and keep you feeling cool.
  • The underarm barriers are created with a center seam design for a sleek, smooth fit that doesn’t bunch under your clothing.

Is the underarm barrier really sweat proof?

YES - We didn't just call it "sweat proof." We earned it! The Thompson Tee is the only patented proprietary design that uses a clinical-grade sweat proof material that completely blocks moisture from passing through. Other shirts may advertise "sweat proof" but don’t hold moisture well. They typically consist of two cotton layers and are often treated with chemicals that could wash out over time. The benefits of our sweat proof technology are native properties, so the shirt will not lose its effectiveness over time. That's why every Thompson Tee with Hydro-Shield Sweat Proof Technology comes with a Sweat Proof Guarantee. We guarantee that your underarm sweat won’t penetrate the sweat proof barrier — or your money back!

How does the sweat proof underarm barrier compare to sweat pads?

While armpit pads and sweat shields may absorb some sweat, they do not allow moisture to evaporate. So throughout the day, armpit pads can lose their stickiness due to sweat or become heavy and bulky beneath your shirt.

Unlike sweat shields, garment guards and sweat pads, Thompson Tee's sweat proof barrier is the only patented sweat proof technology available. By trapping sweat and releasing it through evaporation, your sweat won't show through your outerwear. Plus, you won't have to worry about adjusting your sweat pad or changing it out for a new one throughout the day.

For more in-depth information on sweat pads and sweat shields, check out our page dedicated to the topic here.

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