These undershirts for men and women have patented, sweatproof technology, have no chemical treatments, are proudly made in the U.S.A. and are machine washer and dryer safe. Thompson Tees are perfect to wear while traveling, at work, outdoors and more. More than one million of these have been sold, and they are available in a variety of styles, colors and fits. Thompson Tee is also doing their part to manufacture face masks and donate to hospitals and healthcare workers in need. The masks are reusable, washable and are made with premium breathable, soft cotton and fit the CDC cloth mask recommendations. Thompson Tee has donated 30,000 face masks and counting! Also available on Amazon.