I waited tables for a living; these pants became part of my uniform. Worked well for about 4 months and then began to pill and thin at the knees and around the rear pockets. After 6 months, they needed replacing. I should've thought about some black heavy-duty pants or something. But 6 months wasn't a bad things considering I wore these pants every other night, five nights a week for 6 months.

If you don't wait tables or work in them, they might last you much longer.