I am an avid bib wearer! I just love them for road cycling. But, they always chaf my nipples. Sometimes to the point where I have no more skin left. I tried band-aids, but, if you ride long and far enough, sweat usually makes them fall off. I now wear a t-shirt under the bibs, but on really hot days, it's too much clothing. I want to be able to unzip my jersey on the long, hard hills and get some fresh air. What do you do? Has anyone tried sewing something on the straps? Did it work? Thanks for your comments.