The Thompson Tee Story

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Bringing freedom, comfort and confidence to millions worldwide

Hi, I'm Billy Thompson, founder and president of Thompson Tee.

I've had axillary hyperhidrosis, or excessive underarm sweating, for as long as I can remember. I learned to live with my condition — practicing ridiculous deodorant rituals, swearing off colored shirts and doing everything imaginable to conceal my underarm sweat marks.

I spent many years working in sales, and would sweat right through my undershirts and dress shirts. It was uncomfortable, embarrassing and expensive. I knew there had to a better way to manage this problem.

In 2011, I approached my friend Randy Choi, who had experience working in the apparel industry. I learned that he too, could relate to the struggles of excessive sweating. Randy, who suffered from cranial hyperhidrosis as a teen, underwent sweat gland removal surgery, only to end up with severe side effects like all-over sweating, skin problems, slow metabolism and fatigue as a result.

Bound by our passion to create a safe, affordable and convenient solution, Randy and I developed a lightweight, breathable, comfortable and truly integrated underarm barrier that would completely absorb sweat, withstand the toughest stains, and help those living with axillary hyperhidrosis.

We've come a long way and hit many milestones, including appearing on Shark Tank, hitting 100% growth several years in a row, and even selling over 1 million undershirts! But nothing compares to hearing the success stories of happy customers who consider our undershirts to be life-changing, and are ecstatic to win back their confidence.

- Billy Thompson

"I had learned to live with my condition - practicing ridiculous deodorant rituals, swearing off colored shirts and doing everything imaginable to conceal my underarm sweat marks."

- Billy Thompson

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Our Mission

Our mission is to provide a safe, affordable and convenient solution for excessive underarm sweat with the best products backed by the best service! We're opening the dialogue around hyperhidrosis and reducing the stigma of underarm sweat.

We empower and inspire confidence.

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The Original Sweat Proof Undershirt

We are the only true sweat proof undershirt brand, backed by a patent from the U.S. Patent and Trademark Office.

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HydroShield Technology

Our state-of-the-art HydroShield technology won't wash out or lose effectiveness over time

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Designed in the USA

All our shirts are designed in the USA and made with natural, absorbent materials, like cotton and rayon from bamboo.

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100% Money-Back Guarantee

We're confident that you'll love our products. Go ahead — wear it and wash it risk-free for 30 days.