Originally Posted by
MDcatV
when did undershirts become base layers?
When they got made from wicking fabric rather than cotton.
Originally Posted by
MDcatV
jeez.
Get off my lawn!
I wear short sleeved base layers all year around. Long sleeve base layer on top of the short sleeved one if it's really cold.
Even in the heat it's no hotter to have a good (not t-shirt) base layer on, and it's warmer on descents and cold morning starts.