http://shop.outlier.cc/shop/retail/4season-og-pant.html

I know these are expensive, but much less so when you consider:

1. They're so comfortable on and off the bike (temperature, stretch)
2. They're virtually waterproof.
3. They're virtually stain proof.
4. They're stink proof (rarely need washing; one pair will be enough unless you want to mix it up).
5. They look decent.
6. They show no apparent signs of cycling-related damage such as crotch erosion.

I have a pair of Swrv jeans and like them, but the Outlier are much more comfortable.