Contrary to the other reviews, I find the bra super secure and comfy. I’m a 34C/32D and have M. I’ve used it for hiit workouts, weight training and running. I would only have the strap unbuckled for strength training though. 

I really like this sports bra. I can't really speak too much for support as I have a smaller bust so usually any sports bra will do the trick for me but I do really like the feeling of this one. It's thick and has great coverage, and everything is kept in place! I love the detail on the back that can be worn 2 ways. The only negative I have is that some of the detailing comes off pretty quickly and easily but it's still good quality aside from that

Poor fit,.little to no support. Probbly the poorest support/control bra that I have tried. Definitely not fit for any type of movement.

The back is great however not having the straps hooked in racer back style doesn't give much support if larger chested. I am a size 34c and bought a medium. Great fit and comfortable. Still has some bounce but only used for hiit workout so far

Whilst this is an extremely funky and cool little sports bra that looks awesome on the little reflective strips fell off after the first wash (cold wash), which is a shame because it looked fab on the sports bra. The matching leggings are perfect! Overall, it's a gorgeous gym outfit!