I once bought 100% hemp pants because I heard that material is tougher than cotton, but my bicycle seat killed the pants in just a few weeks. Modern jeans last a few months to a year. I have yet to find pants that endure a bicycle commute.
Had my Nudie jeans for about 5 year wearing them probably 4 days a week averaged over the whole time. Indeed the frequent cycling killed them, but it took quite a while. Now I'm figuring out when to bring them to their free repair service to see if I can get a prolonged live for them.
Disclaimer: cycled probably only 15 minutes a day with them averaged over the whole time, but really hard to say, so your millage might vary
Hemp fibers are tougher then cotton
Ironically, that's why hemp is comonnly used to make thinner more airy and less heavy fabrics. So the final products aren't always more resistant to wear and tear just because fibers are
