An addendum to my original answer...I wear white undershirts daily and use the white belt-clip versions and love the result. I've worn them for over a decade I think. The only time I change is when it is colder and I do a wicking t-shirt (long sleeve over my regular undershirt and under my cover shirt. I have various colors to lessen any show through the cover garment. Get them! You'll be a believer!