Reliable brand . Comfortable and durableI normally am a 34 C but find that the 36B works best : probably as over the yrs wearing this particular sports bra , I’ve thickened a bit in the middle and maybe not quite a C cup anymore ( lean build 5’6 usually wearing a small t shirt. Or medium if I want more room* looks great !* no need for underwire even for women whose “ girls “ are not as perky as they once were ?Low or no bounceThis style is not always available : I was happy to find “ Cool Max “ Bras here( note ; the Cool Max by Wonderbra label is replaced by the silver label” Wonderbra “ which shows at the bottom front on the band)If you are a definite size ie 34C I would just get your size : you can always buy the band hook and eye extenders which are sold in various widths .:)