I have a hard time finding 100% nylon for maximum windproofness "overpants" (large enough to put over regular trousers or wool trousers with suspenders) that have no waterproof coating or membrane whatsoever (for maximum breathability). Most of the so called sports wind pants I find in the stores are polyester and so designed for joggers and athletic purposes.

So far the candidates are:

MEC River 2 pants:
http://www.mec.ca/Products/product_detail.jsp?FOLDER%3C%3Efolder_id=2534374302698621&PRODUCT%3C%3Eprd_id=845524442331445&bmUID=1190118229869

I like what the reviewers say, that "Flies don't bite through them" and "Used it while moving dead trees (with really rough bark) and no holes/ripping." This is the kind of usage I have in mind, but would also want to use them as all purpose wind breaker in urban environment during the cold waves of Canadian winters.

But I don't like the ankles that are too tapered and the front pockets are not secured (no zipper and of course, no flap with button which on a survival point of view is better than the zipper). I do however like the price and they are light.

From Angie's Outdoor (interesting military surplus store in Ontario)
http://www.angiesoutdoor.ca/military_surplus/canadian/pants_wind.html

Secured front pockets, military ones have buttons while civilian have zippers (the buttons are easier to repare in the field) but have to mail order and I'm not sure if they have my size and if it will fit and all that. In short I have to deal with the hassle of trying on clothes by mail order...

More expensive candidates includes The North Face Paramount nylon pants.

What are other affordable options and what do you use?

Thanks