JohannK: If you wear tight cycling clothes, I assume you are a road biker. I mountain bike and even with my B size boobs, a bra is mandatory for comfort. The first time I borrowed my wife's bra and went for a ride, it felt so good I was hitting bumps on purpose. I need to lose about 20 lb so I don't wear tight clothes because it makes me look like an old fat guy, which I am. I ride wearing baggy shorts and a loose T shirt with a pullover leisure bra, which is basically a light duty sport bra with no hardware. I have caught a few women staring at my chest but I think it is the boobs they see and not the bra.