Joined: Feb 2005
Posts: 13,560
Likes: 44
From: Milledgeville, Georgia
Bikes: 2018 Black Mountain Cycles MCD,2017 Advocate Cycles Seldom Seen Drop Bar, 2017 Niner Jet 9 Alloy, 2015 Zukas custom road, 2003 KHS Milano Tandem, 1986 Nishiki Cadence rigid MTB, 1980ish Fuji S-12S
Various combinations I use depending on conditions:
Wicking t-shirt (the cheap Target or Walmart type) under a short or long sleeve jersey
A long sleeve jersey
A short sleeve jersey and arm warmers (this usually works best)
A windbreaker over a jersey
I avoid an under layer if another option will work. It is easier to remove arm warmers or an outer layer as I warm up. It has to be pretty cold for me to consider anything under the jersey.