My Uniqlo Heat Tech have been a success story--I bought my collection probably more than a decade ago and they are only now needing some refreshing (but even so I could still go another year or so!).

Here's my problem. One of the items I came to count on is their lightest weight short sleeve top, as a little light layer when that's all I need. This doesn't seem to exist anymore! (I guess a decade is a long time, things may have changed at Uniqlo!)

Does anyone have a close-fitting warming short sleeve layer that they like and that doesn't get too stinky in the armpit? I'm open to synthetic, since that's what Heat tech is, but I have wondered about lightweight wool, too. Thanks in advance!