Fishnet base layers. They work, and you want them.

[lak2004]

No, no base layer is meant for 80° F.

Only base layer for 80 is a bday suit!

 

[eidsvolling]

No, no base layer is meant for 80° F.

Someone forgot to tell my father-in-law. He wore a set of woolens 365 days a year, working outside as a railroad carman in the continental climate of St. Paul, MN. He also worked bare-handed on his own car in January. I have no idea how he did either one.