Be Careful, Make Sure your Fleece is 100% Synthetic. Not watching my labels once many years ago I bought a "Fleece" that was actually 50% cotton. Technically it is still legal to call it fleece, but its junk and the inside label was well hidden. While it had a BIG Fleece Card attached to its Outside.

This did not go well the first time I got to the woods with my new Fleece Sweater and the humidity went up. Suddenly my nice sweater was very cold and damp. I now check the labels very very closely before I but any "FLEECE".