Thanks for the head's up MRM!
If you don't mind me adding to your thread....if anyone is looking for a casual thermal top......I have been wearing one of these lately and it's the most comfy l/s casual shirt I think I've ever worn. It is NOT super heavy material that feels "too thick"...the feel is very light, which I prefer than some of the "thicker" type materials in a l/s shirt:
(From Kohls)
Men's G.H. Bass Classic-Fit Mountain Fleece Soft-Touch Crewneck Top
On sale now for $22.49/ ea.