Joined: Jul 2002
Posts: 40,863
Likes: 3,115
From: Sacramento, California, USA
Bikes: Specialized Tarmac, Canyon Exceed, Specialized Transition, Ellsworth Roots, Ridley Excalibur
I have a couple of poly mesh singlets. I bought them as tri race shirts but they work great as a baselayer, hot or cold.
Do not wear cotton, unless you like chills and rashes. It just absorbs the sweat and holds it against your skin. (I thought this was common knowledge.)