Thompson Tee deep v neck white sweat guard shirt, size medium. These undershirts really do work for preventing underarm sweat from showing on blouses. I'm only selling because I wear a small in this brand. This shirt is the slim fit style made from rayon, bamboo, spandex. Stretchy and plenty long enough to tuck in and have it stay tucked. Condition is used, no stains or holes but it does have pilling. It is still perfectly functional for stopping sweat and the pilling doesn't matter much since it is an undershirt.