Great suggestion on donating.

However, I certainly would not imply that for any wannabe cyclist that it was important for them to wear a cycling jersey to bike ride of any sort. Believe me, during the first few years of returning to regular cycling, I did cycle several thousand kms. annually in a...T-shirt. And on bike trips over 100 km. each day for several weeks.

A shirt with a polyester blend at least, would help (for some wicking of sweat) and had a pocket somewhere on the shirt.