Dress with confidence in our Slim Fit Undershirt
Thompson Tee's men's slim fit undershirts feature patented sweat proof technology that stops sweat in its tracks! Our undershirts are backed by our 30-day guarantee.
The Thompson Tee slim fit undershirt fits discreetly beneath your favorite button-down or t-shirt to protect your clothes from armpit sweat, stains and odor. Our men's slim fit undershirt comfortably hugs your body for a streamlined look and feel that's seamless under layers. Ease your worries and tackle any sweaty situation with confidence.

Patented, Sweat Proof Technology
Proprietary moisture-wicking design stops sweat from showing through your underarms — period.
Center seam with separate front and back sweat panels offers a sleek, tailored fit and feel.
Hydro Shield sweat proof technology won't wash out or lose effectiveness over time. Prevent pit stains day after day, wash after wash.

Ultra-Soft, Lightweight Material
Our men's slim fit undershirts contain 95% premium rayon from bamboo and 5% spandex for a smooth, body-hugging fit.
Tagless, lay flat collar
Itchy, scratchy tags are a thing of the past. Thompson Tee's tagless design ensures our shirts lay flat with no unsightly bunching.
Machine washer and dryer safe
Machine wash the slim fit undershirt in cold or warm water and dry on medium (or lower) heat.

Long, Tuckable Length That Stays Put
Our slim fit undershirts have a long, tuckable length that stays in place, allowing you to move through your day freely.