I'm going on an epic rail journey this summer, and I have decided that I want to wear loose trousers with draw string or elastic waist. I'm a size 18/20. I'd quite like them to be patterned so as to not show the dirt too much. They need to be wide legged, but with the crotch not too droopy or I'll get rubbed- i's going to be pretty hot. And as cheap as possible, please. And on the subject of rubbing, does anyone know where you can get pure cotton comfort shorts? Thank you!