For workouts I have worn either gray or black men's Capezio brand tights, and, no, they are not particularly sheer or revealing. For all the reaction I got in a gym heavily patronized by gay men, no one even noticed. The cotton thong is mainly for comfort, to soak up perspiration, as the tights are 100% nylon, and to prevent chafing. I have not worn them to work out without the thong. When I was younger, say, 10 years ago, I used to wear the gray Capezios with black riding boots to go out to my regular bar, and then I'd never wear anything under the tights. ;^)[/i]