I've always hated thongs, and only kept one pair for when an outfit absolutely required it.  The idea of athletic thongs sounded ridiculous until I got the best yoga pants ever (Soybu Women's Killer Caboose Performance Pant.  They're so form fitting a pantie line is rather unflattering.)  I had already purchased and love, love, love, the Champion Women's All Day Bra so I ordered these to match.  I did order one size up based on the other reviews, I'm sure that was a good idea.  I think these are as comfortable as a thong can be.  (The hipsters of this line are really good too, those are true to size.)