These are heavy duty work pants.  I bought one each of Navy, Khaki and Black.  All are well constructed of heavyweight fabric.  The pants look sharp and wear well.

I found the thighs to be a little tighter than expected based on the size.  YMMV.

I found the pockets to be mediocre in size.  I could fit my hand and wallet, or my hand and keys, but not my wallet and keys in the same pocket.  Overally, they were about an inch too shallow and an inch too narrow for my expectations.

The pockets were heavy-duty fabric as well, and would hold up.  It's also possible that you could easily expand the pockets with a strip of fabric inside, but that's a pain.

These compare well and slightly exceed the durability of Dickies' brand work pants, which are another favorite.