Excellent quality!!!  The denim is very durable.  However, I think the button hole in the middle of the front bib looks strange.  Also, my son wears size 12 pants normally.  The size medium (10-12) Dickies were the right length but they were too tight around the waist area.  The size large (14-16) was way too big for him -- long and loose.  It's too bad they don't make a pair for size 12-14.