This bra is good, I am always nervous about buying sports bras true to my bra size. I usually buy them a size small to make sure the ladies are extra snug. So I bought in a Medium. I am a 31 year old female that had a child almost 2 years ago. Pre baby and in my teens and 20s (when my ladies were naturally perky) I always bought 34C with the occasional 34D (everyday bras). In my twenties, I would get measured at Victoria secret and they said I was just between a C and a D, so I bought bras in both sizes depending on when I tried them on. After pregnancy, and with age, there is less perk and I need more assistance. I also now only buy 34D (need to keep them in!).The ladies are still snug and provide support when I run. My cleavage does not show. The only thing is that it is a little too snug around the bottom. But that that will loosen up with wear. I live in a very hot and humid area. When running this summer (starts at 5am, with 70-90% humidity and feel like temperatures in the high 80s), my boobs had good support, comfort, and there was the expected amount of boob sweat. It is a good bra, not a love bra, but good.