I'm heading up the Western Arthurs in feb and need some new shorts... I ripped the "a*se area" out of my last pair of shorts while scrambling...

I realise that in a perfect world you shouldn't drag your bottom across rough rocks, but sometimes it's just a part of scrambling (well at least for me it is).
Can anyone on here recommend some tough shorts, zip off's or three quarter pants that will stand up to some abuse? (not cotton).

Cheers,
Stonie.