Dickies Men's Double Knee Work Pant —
I work in the entertainment industry as a stage hand, dispatched through an IATSE local union. Our working dress code varies a lot, (from working clothes to smart dress 'blacks') but usually requires black trousers of some sort. These Dickie trousers when new, hold a crease well enough to qualify as 'casual dress' slacks. They wear well, don't tear readily, and are sturdy enough with their double knees that they are great for general purpose work, (i.e. carpentry, rigging, etc.) I swear by them and wouldn't buy any other brand or style.