OP, why do you have TWO threads on the same topic?

Here's some good hi-viz shirts. I've owned and used these myself. The ANSI (meaning actually right color AND flourescent dye used) colors last through many washings. The fabric is tough but doesn't breathe really well. Also the cuffs are a little tight on the long sleeve version. I cut off the cuffs, which then permitted cooling air to blow up sleeves and yet still provide some UV protection.

http://www.alertshirt.com/potmanco.html

http://www.alertshirt.com/poloslmtanco.html