I bought this bra a few months ago to wear under my rash guard swim shirt since I need extra support (I am a 38DD and bought a large as I wanted some compression).  It is very comfortable and I liked it so much I have gotten 4 of them so o could swap them out.  I do not swim more than once or twice a week but so far they seem to be holding up and not losing elasticity (I do wash them out each time with chlorine removing shampoo after I swim).  The only drawback is that you can slightly see your nipples through the bra and rash guard it it is cold.  I thought my rash guard was thick enough but I had a picture taken today at the pool and think that I either need to wear two of these bras (one on top of the other) or wear another swim bra with mor padding (I am going to try th Private Island Hawaii swim short top and see if that covers better).  I will continue to wear these ones for lounging around the house.