Men’s Sweat Proof Undershirts

Say goodbye to embarrassing sweat marks with Thompson Tee — the original men's sweat proof undershirt. Our patented Hydro-Shield® technology blocks 100% of underarm sweat, leaving you self-assured for any occasion.

Men’s Sweat Proof Undershirts

25% Off Sitewide

Use code GIFT25 at checkout

Original Fit

  • New Colors
    Men's Sweat Proof Undershirt - Original Fit Crewneck
    View Details

    Men's Sweat Proof Undershirt - Original Fit Crewneck

    $33.99

    25% off with code GIFT25

  • On Sale!
    Mixed
    View Details

    Men's Sweat Proof Undershirt - Original Fit Crewneck Pack of 4

    $135.96
    $129.16

    5% off packs

    25% off with code GIFT25

  • New Colors
    Black
    View Details

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

    $33.99

    25% off with code GIFT25

  • On Sale!
    Mixed
    View Details

    Men's Sweat Proof - Original Fit V-neck Pack of 4

    $135.96
    $129.16

    5% off packs

    25% off with code GIFT25

  • Black
    View Details

    Men's Sweat Proof Undershirt - Original Fit Deep V-neck

    $33.99

    25% off with code GIFT25

  • On Sale!
    1 of Each
    View Details

    Men’s Sweat Proof - Original Fit Deep V-neck Shirts Pack of 4

    $135.96
    $129.16

    5% off packs

    25% off with code GIFT25

  • Limited
    Olive Drab Green
    View Details

    Men's Sweat Proof Military Shirt - Original Fit Crewneck

    $33.99

    25% off with code GIFT25

Slim Fit

  • Black
    View Details

    Men's Sweat Proof Undershirt - Slim Fit Crewneck

    $39.99

    25% off with code GIFT25

  • On Sale!
    Mixed
    View Details

    Men's Sweat Proof - Slim Fit Crewneck Pack of 4

    $159.96
    $151.96

    5% off packs

    25% off with code GIFT25

  • Men's Sweat Proof Undershirt - Slim Fit V-neck
    View Details

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

    $39.99

    25% off with code GIFT25

  • On Sale!
    Mixed
    View Details

    Men's Sweat Proof - Slim Fit V-neck Pack of 4

    $159.96
    $151.96

    5% off packs

    25% off with code GIFT25

Original Fit Long Sleeve

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

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

    $40.99

    25% off with code GIFT25

  • New
    On Sale!
    Men's Sweat Proof Long Sleeve V-neck Undershirt - Pack of 4
    View Details

    Men's Sweat Proof Long Sleeve V-neck Undershirt - Pack of 4

    $163.96
    $155.76

    5% off packs

    25% off with code GIFT25

  • Men's Original Fit Longsleeve Crewneck
    View Details

    Men's Original Fit Longsleeve Crewneck

    $40.99

    25% off with code GIFT25

  • New
    On Sale!
    Men's Sweat Proof Long Sleeve Crewneck Undershirt - Pack of 4
    View Details

    Men's Sweat Proof Long Sleeve Crewneck Undershirt - Pack of 4

    $163.96
    $155.76

    5% off packs

    25% off with code GIFT25

Frequently Asked Questions

Who are Thompson Tees for?

Thompson Tees are for everyone looking to keep sweat off shirts and sight! Regardless of your age and whether you're dealing with hyperhidrosis or just want a little extra protection against nervous sweat, our sweat proof undershirts have got you covered. They are a comfortable, effective, chemical-free solution to underarm sweat marks.

Original Fit vs Slim Fit: Which one is right for me?

Choosing between the Original Fit and Slim Fit depends on your personal style and comfort preference. The Slim Fit, made from a blend of bamboo rayon and spandex, offers a snug fit that stays discreet under clothing, ideal for those who prefer a streamlined look. The Original Fit, crafted from 100% cotton, provides a more relaxed fit, offering extra room and breathability, perfect for individuals who appreciate a classic, looser undershirt feel.

Check our Buyer’s Guide for more information.

How is the Thompson Tee different from other "sweat proof" shirts?

Thompson Tee stands out as the pioneer in sweat-proof technology, being the only undershirt patented in the U.S. for its Hydro-Shield sweat proof design. This cutting-edge technology not only completely absorbs and blocks sweat from showing but does so while maintaining breathability, a unique balance that sets us apart from other alternatives.

See how Thompson Tee stacks up against other alternatives.

Is the underarm barrier really sweat proof?

Yes, the underarm barrier in Thompson Tee uses a patented, clinical-grade sweat proof material, ensuring that moisture does not penetrate the fabric. The innovative design maintains its effectiveness over time, wash after wash, providing reliable, long-term sweat protection.

If it doesn't absorb sweat, where does the sweat go?

Our sweat proof undershirts feature proprietary layering and stitching techniques that work like reverse osmosis. This means they draw sweat away from your skin and release it as vapor, preventing sweat from reaching your outer clothing, and keeping you dry throughout the day.

What's the story behind the Thompson Tee?

Thompson Tee was born from the personal journeys of friends Billy Thompson and Randy Choi, both of whom experienced the challenges of hyperhidrosis, a condition causing excessive sweating. Motivated by a desire to offer a solution to the embarrassing issue of sweat marks and stains, they created the Thompson Tee—a revolutionary sweat-proof undershirt that transforms confidence in everyday life.

Learn more about Thompson Tee’s story.

Aside from underarms, does the shirt prevent chest and back sweat from showing?

Thompson Tee is specifically designed to target underarm sweat. While it offers some general moisture-wicking properties for other areas like the chest and back, its primary focus is ensuring complete protection for the underarm area.

Does it stop working after a couple of washes or after a few times?

No, Thompson Tee is engineered for longevity. The sweat proof barrier retains its effectiveness through numerous washes, offering reliable sweat protection over repeated use. By following our care instructions, you can ensure your tee continues performing optimally for a long time.

Our customers report that their tees last several months to over a year with proper care.

Truck Icon

Free Domestic Shipping

Thompson Tee offers free shipping to any domestic location within the United States on orders over $50.

Box Icon

30 Day Risk Free Returns

Wear it, wash it, and wear it again. We accept returns or exchanges on all opened or used shirts up to 30 days from the purchase date.

Sweat Icon

Patented Sweat Proof Technology

Our patented Hydro-Shield® technology blocks underarm sweat, protecting you from wet marks and yellow stains – guaranteed.

From the beginning of my teaching career, I've had to deal with sweaty armpits. I've tried everything...sweat pads, prescription deodorants, none of it worked. A friend of mine suggested the Thompson Tee...It's a miracle!

Justin N.

High School Teacher

I [was] diagnosed with hyperhidrosis when I was 20. I've never had something that soaks up sweat like this, that doesn't show underneath and that's so comfortable.

Joe D.

Corporate Sales Operator

I was so excited when I bought my first set of Thompson Tees I bought each one of my three siblings some because we all suffer from the same problem. They love the tees and so do I and I'm still buying them two years later.

Aaron B.

Hereditary Sweater