Richard Ferguson wrote:
Cotton is not a good choice for most outdoor activities, especially
those around water. If it is very hot I sometimes wear cotton t-shirts.
I use doubleknit polyester dress pants instead of the often costly
pants made by the outdoor companies.

I was fortunate to score a brand new pair of Columbia GRT convertible
pants at Ross

http://www.rossstores.com/

for a mere 99 cents. I searched the whole mens clothing side looking
for another pair but they only had the one.

Wal-Mart used to sell polyester T-shirts for around $7 that were
popular with the mountain biking crowd for their ability to wick away
perspiration. I'm not sure if they still have them but it would be
worth a look.