If you don't like extra vents in your fleece then you can always get DragonFleece (a Nomex fleece)
http://www.benmeadows.com/true-north-exxtreme-nomex-fleece_36809811/ for a fistfull of dollars more.
By the way, it is great stuff if you can get someone else to buy it.
The cheap ones are great for give aways. I like the idea of buying at the thrift store. Even here in Florida we get people with hypothermia every winter. Especially after auto accidents when they stand around in the rain. EMT's have to drag them in to keep them from having problems.
Respectfully,
Jerry
Holy crap. I love nomex as much as the next firefighter obsessed little boy, but wow. I could buy a set of wildland nomex for that price!
QJS, I still don't like windy conditions in fleece. I get what you're saying, but I'd rather not have a layer that loses stored heat whenever I walk quickly. As a middle layer, great. The windproof as an outer layer, fine. But regular 100 or 200 weight as an outer layer? Only in calm weather.