I ordered this bra in a medium, I generally wear a 36B. The bra is sort of snug but that's to be expected.  It does feel pretty comfortable but not like its not there.  The comfortable thing is no clasp in the back, and the wide band.  I liked it enough that I proceeded to order a second one, and for some reason, the second one was not quite as comfortable because it went up too high under my right arm and it pinches and squeezes me there.  Obviously no two are exactly the same, but I was surprised at how much I noticed this with the second bra.  It's not a bad bra, but it is not as good as I had hoped.  I have gone back to my old bra and I notice how it is also not perfect because i can feel it around my back much more than with this bra, so I am still on a quest for the perfect comfortable  bra.