I like this bra for low movement and high support like bootcamp or weights. I tried to wear it for a marathon training run of 18 miles. Very sweaty outdoor running session and I have some major chafing and open redness with blisters and sores in the front where the lower zipper lays on the skin. (See photo) I had it covered with the fabric part, but still caused major issues with the metal sticking out and running there. I’ll stick to my full fabric running bras. I realize that not everyone is running long distances, but this isn’t going to make it to the marathon. 8 more miles and I’d hate to see how it would look.