In considering a replacement, I hoped to move up a bit from the poly fleece. Cotton fleece? Sweatshirting? Sweater knit? I didn't find a great alternative in the fabric store here and the cost of shipping and duty makes me hesitant to order online. Since the fleece had worked before, that's what I stuck with.
The other top was worn out and was exactly what I wanted, so I just cut it apart and made a pattern from it. The zipper was the right length, so I ripped that out of the old top and reused it.
It's been good to have this new version in my closet. Hurrah for being warm and cozy on the home front!
* My mom is a former Home Ec. teacher. Her dislike of fleece is so great that it was referred to as "the F-word" in her classroom. :)