There are two versions of the Champion mesh sports bra - this racerback pull over bra and the one with the hook and eye clasp in the back and adjustable straps. Both are made of a thin, stiff, almost neoprene like material. Very odd. Not as uncomfortable as I thought they would be, but not the best by a wide margin. I am a very solid 34B. Ordered the M and L in this racerback version since everyone said it ran so small. The M was a struggle to get on as the smoothtec band doesn't have a lot of give, but once on was comfortable. A tiny bit snug but good fit. The large was too big all over - shoulder straps not short enough and excess material in the cups. Not super supportive but ok - I wouldn't run in it. I happened to purchase this item when it was very inexpensive so I kept it, but now that amazon has the prices higher again I'd say you can get a better bra for your money. I also bought the Champion mesh bra with the hook and eye closure in back. While still not a favorite, I like that version a lot better than the racerback.I love the Champion brand and have a few of their other sports bras, so I decided to give this one a go because the price was right and I always seem to run out of sports bras at the end of the week since I wear them to work out just about every day. The other reviewers were correct when they said that this sports bra runs smaaaalllllll. I ordered a L when I would usually order a M due to the other reviews and it fits perfectly. I love the black mesh over gray, as it makes the bra look super sporty. It's not a "high impact" bra, as in, I wouldn't run in it because it would not provide enough support, but for my gym routine (elliptical or bike, weight lifting, yoga) it does fine. The the wide band at the bottom does tend to roll up at times, which can be annoying. Overall it does what its supposed to do for a low cost.The reason I am giving this product such a low number. Well, I use it to work out and from the moment I got it the seem under your breast, right where you rib cage is. Will turn into a rubber band and it's constantly riding up my breasts. I have to adjust it all the time, I mean the whole time I am working out from beginning to end of work out. I kept it because I like the color and the material dries quickly. But understand me. Whom ever made this does not work out. BE PREPARED FOR IT TURNING INTO A RUBBER BAND UNDER YOUR RIBS !!!I'm a 34DD and got a large after reading others' reviews and guessing a bit on the size chart. The band fits well but the stretchy mesh provides no support at all. It's perfect for wearing around the house or doing something low impact, but just feeling the material I think even if I'd gotten a medium instead it still wouldn't be enough to go jogging or something like that. I like it though, it's really comfortable.This was seriously cheap and I got it despite some bad reviews. Well done! amazing bra, it does run a little small, so I got a Large rather than a medium and fits well. I wear a 38B. I like the mesh fabric, it was a little tight. I do not understand why other people thought that it does not hold well with high impact:I did 1 hour high intensity kickbox and running with this and it hold very well and it was much better quality than many other bras that I have. I am buying a new one. Wonderful , good quality and amazing for high impact exercise. And the price is amazing. Good buy.The band on the bottom rolls up because the material is too thin and the band itself is too wide. Not bad as a backup sports bra but not my favorite. Also, I'm a 36B and got a medium, it gives minimal support so I only use it if I'm running less than 2 miles or else my chest starts to hurt.I found that the underbust band is just too low on me (or I guess the straps are too long?). When I wear this sports bra, I am constantly adjusting it. I have never noticed this problem with other sports bras (Champion brand or otherwise).The fit was as expected (large for a 38C) and I think would be comfortable. I'm returning because the non-adjustable straps are not short enough for me and because the light padding is borderline nipple-showing (would probably be adequate for many)Compré este en color morado y verde, el color es muy agradable a la vista, combina muy bien y los materiales son de buena calidad, es malla gruesa y la banda elástica aunque es un poco rígida considero que está bien ya que ayuda a que el top se mantenga estable y no es incómoda ni deja marcas o algo parecido. Hay que tener en cuenta que este top no tiene almohadillas y el hecho de que las tallas vienen mas chicas de lo que deberían, compré talla chica (que es mi talla) y me queda un poco justo, el top estira pero aún así se podría sentir un poco apretado, en mi caso no es molesto pero creo que sería mejor si se pide una talla mas grande de la que usan.Bra size is D36. This fits but a little tight as it is not as soft and stretchy. Its a bit stiff. The bottom band curls up when I bend so I am frequently adjusting it. I still wesr it to the gym when my others aren't clean. I would go with the "double dry heather sports bra" over this one. Delivered with expected delivery date.Ya conocíamos esta marca, por lo que pedimos una talla más grande y así podemos decir que son muy buenos productos, dejan que tú piel respire y sostienen todo en su lugar.Buen soporte para ejercicios funcionales y correr distancias medias. Durable. La tela es de buena calidad. Recomendable para uso constante.34a pidan grande