I have to say that I have never worn the sports like style bras.. to me it looks like too much material for myself when I'm small anyway.

Besides I don't wear sleeveless anything when I'm cycling or hiking..no matter how hot it gets. Just a personal rule...to keep the skin of my chest, upper arms and upper back area .."preserved". (And it really has proven true for me over the years...compared to skin on my face.)

I just wear an ordinary bra underneath.. but just like everyone else, still wicking and sweating problem.