Read few discussions about poly/nylon mesh jackets melting during an accident. Some say it ain't so. You be the judge (take few minutes and read article). It is middle of summer, 90+ temperatures and I see lots of folks not wearing anything but t-shirts and no jacket at all. According to article below, poly/nylon are not so bad, check those after accident pictures and reports. Out of all brands including Olympia, JR, Icon to name a few, I prefer Firstgear. Had Olympia hi-vis jackets , well made but just could not take that bright yellow anymore, these things are bright. Have to be carefull how you handle them, they're like magnet to dirt. Did not like velcro closures straps at the collar (on all of them), kept on opening during riding, they should change them to snaps. As far as visibility, I like 3M reflective tape on the back and sleeves of jackets.
Anyways , here is the article.
http://dontai.com/wp/2010/06/03/does-motorcycle-mesh-gear-melt-in-a-crash/
Anyways , here is the article.
http://dontai.com/wp/2010/06/03/does-motorcycle-mesh-gear-melt-in-a-crash/