RidingSeed said:
you usually don't get SUNBURNS through a t-shirt(unless the sun is close as hell to the earth). You will just get a weird shaped tan. It could be worthwhile buying a UV protected jersey, but personally I wouldn't. I'd just apply some sunblock and that's it. Â
So, everyone cycles in a t-shirt? Or, wait: you're saying that t-shirts are UV opaque. So, there's no need for scientific review because........you never got burned wearing a t-shirt, right? Fortunately, humans don't have to rely on the lackluster ability of people like BigotBob and others to judge whether or not UV penetration of clothing is a concern. There's a thing called science: http://archderm.jamanetwork.com/article.aspx?articleid=478464 A quote from the above paper:
"in Australia, cancer education campaigns have long urged the use of clothing in conjunction with hats and sunscreens as UV protection. Nevertheless, several studies have recently shown that, contrary to popular opinion, some textiles provide only limited UV protection.2 In addition, it was found that one third of commercial summer clothing items provided a sun protection factor of less than 15." So, 1/3 of summer clothing was shown to have less UV protection than SPF 15. Hmmm. What is the recommended SPF for sunblock? Oh, wait. It's much higher than SPF 15, isn't it? Now is probably a good time for BigotBob and t-shirt experts the world over to run off and look up what sun protection factor is all about. Feel free to check Google Scholar, arXiv, and other research databases for further information, or feel free to invest in the intellectual vacuum of BigotBob's space or in biased memories of t-shirt performance. Oh, and don't forget why it is that UV protection is supposed to be good. See there's that whole connection between skin damage secondary to UV exposure and skin cancer, particular melanoma. BeenThereDoneThatBob didn't mention that when he talked about his voluminous experience in Arizona. Note that the Bigot "Machinist" also didn't mention that the states with the highest mortality from melanoma are Alabama, Arizona, Colorado, Idaho, Indiana, Iowa, Montana, Oregon, Utah, and West Virginia. What... is that Arizona in there? Imagine that.