If you want to try some, it is a bit hard to find these days (out of hiking fashion...). A search found some at Wiggy's:
http://wiggys.com/moreinfo.cfm?Product_ID=35 (Haven't tried this brand myself.) I also found some intended for cycling.
Finding wool fishnet: I've been on a 20 year search for it -- got onto VFTT in 2007 so I could ask Doug about sources -- and have finally had some results as the world goes online. The Scandinavians still make it, calling it mesh or net in english. Two Norwegian companies, Brynje & Devold:
http://www.brynje-shop.com/ffSearch.php?sourceRefKey=PtPPhym5w&queryFromSuggest=&query=mesh and
https://www.devold.com/outdoor-en/don/61/0/search/?search=mesh&x=0&y=0, and one Swedish, Klattermusen:
http://www.klattermusen.com/men#material~s1=4-wool&categories_2~s1=sweaters. Klattermusen only makes the top, and that's the only one I've been able to try so far -- the mesh is smaller than I had on old US-made, but I'm very happy with it. I found that on STP. Otherwise, I've seen a few US shops carry the Norwegian stuff briefly, but it doesn't seem to catch on over here, so currently the only option for the Norwegians is to order directly. Last I looked, the web stores don't have an option for shipping to the US, but word is that they're happy to do so if you email.
Wiggy's only makes it in nylon, which I found to be freezing wet or dry next to skin -- he believes in wearing it baggy, and everytime it moves away from my skin it's instantly cold.
The old US fishnet I had was from Scandinavian Knitters out of Bennington, a mom & pop operation run in an old knitting mill by Carl & Eva Jacobsen in the 70s & 80s. Their wool and cotton products can still be found as "vintage" on Etsy & ebay, sometimes unused.
Resurrecting last year's thread here, but maybe it can be of some use in the coming season.