Pearl IzumiMen's Transfer Mesh SS Baselayer(Return to Product Page)

I wear one of these for every ride. I ride in Utah where the temps can be in the 100's and in the 30's. I have found that it does keep me cooler in the heat and the extra layer in the cold is fantastic. I love it. It does stain though over time.

I was skeptical that an additional layer could keep me cooler, but being able to draw away sweat and spread it out does seem to help for indoor rides.