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Women's Sweat Proof Undershirt - Slim Fit Deep V-neck Pack of 4

Thompson Tee Guarantee Sweat Proof Guarantee

Women's Sweat Proof Undershirt - Slim Fit Deep V-neck Pack of 4

Thompson Tee Guarantee Sweat Proof Guarantee

Free Domestic Shipping Over $50 Shipping Information

30-Day Risk Free Returns Shipping Information

Please note: individual items cannot be returned; all items in the pack must be included for a refund.

Bundle & Save on Women's V-Neck T-Shirt Packs.

Enjoy discreet, guaranteed sweat protection with our women’s slim fit V-neck t-shirts, now available in a pack of 4.

Each pack of women’s V-neck t-shirts contains 4 sweat proof undershirts with the patented sweat proof technology you know and trust.

The slim fit V-neck t-shirt lays flat beneath your clothing for hidden protection against sweat marks and stains. Made from bamboo rayon and spandex (and polyester for Heather Grey styles), the undershirts feel luxurious against your skin while protecting your outer layers and extending the lifespan of your clothes.


Choose the perfect T-shirt pack for you. Our women’s slim fit deep V-neck t-shirt packs come in black, white, grey, beige or a combination of all 4 (1 of each color).


Game-Changing Undershirts for Women

Revive your wardrobe, launder less and elevate your confidence. The Thompson Tee slim fit deep V-neck shirt for women blocks 100% of underarm sweat stains and odor, guaranteed.

This women's deep V-neck sweat proof undershirt features patented sweat proof underarm barriers that absorb underarm sweat, preventing moisture from seeping through your clothing. The result? All-day freshness, less laundry and less dry cleaning!

Wear the women's V-neck undershirt beneath any top, sweater or outerwear for around-the-clock defense against sweat, odor and stains. The slim fit style fits discreetly beneath your outfits and the deep V-neckline is ideal for wearing under lower-cut tops without peeking out.

Made with 95% rayon from bamboo and 5% Spandex. 

Patented Sweat Proof Technology for Women's Slim Fit Deep V-Necks

Patented, Sweat Proof Technology


Proprietary design prevents sweat from showing through your underarms and ruining your clothing — 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 and keep your wardrobe fresh, day after day.

Women's Slim Fit Deep V-Neck Shirt Features
Feature 1

Ultra-soft, lightweight material

Oh so soft and comfy enough for daily wear. Our women's deep V-neck shirts contain 95% premium rayon from bamboo and 5% Spandex.

Feature 2

Tagless, lay flat collar

Seamless look, feel and fit: Thompson Tee's tagless design ensures the shirt lays flat with no unsightly bunching.

Feature 3

Machine washer and dryer safe

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

Tuckable Women's Slim Fit Deep V-Neck TShirt

Long, Tuckable Length That Stays Put

The women's slim fit deep V-neck shirt is designed with extra length to stay tucked in all day. Your outfit will stay on point — no matter what.

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. Individual items cannot be returned; all items in the pack must be included for a refund.

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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XS Size 0 - 2
Bust 29 - 30 in / 71 - 76 cm
S Size 2 - 4
Bust 30 - 32 in / 76 - 81 cm
M Size 4 - 6
Bust 32 - 33 in / 81 - 83 cm
L Size 8 - 10
Bust 34 - 36 in / 87 - 92 cm
XL Size 10 - 12
Bust 36 - 38 in / 92 - 97 cm
2XL Size 12+
Bust 38+ in / 99+ cm
Size Scale 0 - 2 2 - 4 4 - 6 8 - 10 10 - 12 12 +
Bust - Inches 29 - 30 30 - 32 32 - 33 34 - 36 36 - 38 38 +
Bust - cm 71 - 76 76 - 81 81 - 83 87 - 92 92 - 97 99 +

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

The shirt and size you choose will ultimately depend on your fit and style preferences.

Both our Men’s and Women’s Slim Fit shirts are made with rayon from bamboo and are intended to fit snug, so they’re more discreet underneath your clothing.

The Original Fit is made from 100% premium combed cotton and provides a little more breathing room for those who prefer a looser undershirt. If you're looking for the most sweat protection but like the fit of a typical T-shirt, you may want to try a size up in the Original Fit shirts.

Either way, both options come with our proprietary Hydro-Shield Sweat Proof Technology, backed by our Sweat Proof Guarantee!

For the complete guide to choosing the right Thompson Tee size and style for you, check out our blog here.

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.