I was super skeptical about this buy.  I've had a slew of different brands, types, and sizes over the years.  None of ever been as comfortable as this one.  I'm not so well endowed, so I think that's why it sometimes seems to me that I need to pull it down more than other sports bras.  At first I thought that the back part that's above the keyhole-type part was a weird cut because it popped up, but I just needed to adjust it better.  I like the thin pad that helps to line the bra and I think it adds to you not feeling like you're binding your chest wearing it.  I can easily wear this all day and not feel claustrophobic (don't know if others have this issue as well).  I will definitely buy more in the future!  Wish that they offered an entirely white and/or tan one so that I could wear it under costumes.