These pants fit the ticket for a HVAC tech.  We carry all types of small gadgets (ie, jumper wires, thermometers, core removers) and they fit into all the pockets just right.  I have a small two-way phone which fits the cell phone pocket perfectly. Yes they do run a size small.  They are more comfortable than my wrangler riggs which I also like but they are a tad better due to the extra pockets..hope they make a denim in the future..I strongly recommend them, they are a rugged pant for someone who crawls around on their knees under mobile home or in attics..Items stay in the pockets better than a shirt pocket. Do yourself a favor and buy a pair.