It's tough to find good, durable practical pants in my size.  I use lots of pockets at my warehouse job.  The first time I got Dickies carpenter pants, they had a large patch pocket on the left leg that they seem to have removed, but there are still plenty to keep my pens, markers, knife, paper clips, tape measure, work ID, cell phone, and snack machine money in.  They're sturdy, too.  This is the third time I've gotten them, and they last for several years.