My longest-surviving cycling trousers are pure cotton, from Steve Redgrave's FiveG range. The last of which was bought about 2011 as Debenhams ran the range down. They're faded and some of the pockets have needed repair (mostly due to cycling with keys) but they're only just wearing out now.A bit of polyester in the mix can add durability. Try polycotton or wool polyester mix. I used to get about 2 years out of a pair of cargo style troosers with daily riding. I buy more now and rotate usage.
You can get some cycling trousers for womenI have this problem as I cycle to work in my black work trousers. Fortunately I wear a long jacket so nobody can see my shiny arse!
I was very sad, however, when my favourite gap jeans finally gave up the ghost and had to go to denim heaven.
Levis do excellent cycle proof jeans -for men![]()
You can get some cycling trousers for women
http://www.alwaysriding.co.uk/for-the-rider/womens-bike-apparel/trousers-waterproofs.html
http://www.rapha.cc/gb/en/women's-shop/jeans-and-leggings/category/womens-jeans-and-leggings
And Levi's
https://www.evanscycles.com/levis-commuter-women-s-high-waist-skinny-jean-EV268145
I have worn a stretchy short skirt over my trousers to protect my derriere then slipped it off in the ladies. I'm not sure you'd get away with it though.I have the same problem (black work jeans) and have often thought about getting some cheap black shorts to wear over the jeans while on the bike - let the shorts take the strain and then just whip them off when I get to work - but I'd look even more of a tw*t then I already do...