I have been trying for the last year or so to find a method to conceal show-through. Even wearing an insert and a tank top underneath doesn't help. These really work and I can go back to wearing one layer again. The back strap is a little thin and weak but other than that, I like them. If there were more features and materials to increase comfort, I'd love them even more. I wish Bali would do concealers in a sports bra line. That would be awesome!