http://www.riggsworkwearbywrangler.c...ripstop/3W060#
I just bought a pair of these last week and seriously have worn them every day, I love them! They are the Riggs (by Wrangler) Ranger Pants. As you can see, I said "Contractor" meaning renovations, construction, etc. But these are damn good enough to use for an Overseas Security Contractor look if you want one.
I paid $42 for mine at Le Baron (incidentally I wear a size 34", could only find 36" and up, and with help of a belt fit me just fine, gives me extra space to tuck a few shirts in on colder days) but I'm sure a LOT of work wear places will either stock them or be able to order in some for you.
They are triple stiched, 10oz cotton rip stop material, double layers on the knees (ok, mid thigh to mid shin), and the pockets are well made and designed (rear ones are lined in 1000D Cordura). Only niggle for me is the hammer loop, it has gotten snagged on the handrail on my basement stairs, but hey, shit happens.
The "twist" is these pants change colours/shades, kinda like Multicam does, depends on the light. Normally they look like a medium khaki colour, in some light settings they look like a lighter colour tan, and other light settings they turn 'sage' (OD for those that don't know what sage colour is, US flight suit green colour). Here's is the normal khaki colour:
http://www.gandlclothing.com/uploade...IGGS/3W060.jpg
Now check out the different shades they turn depending on the light source:
http://images.cabelas.com/is/image/c...1?$main-Large$
http://www.rootintootin.com/catalog/...GER%20PANT.jpg
http://images.wrangler.com/RIGGS/rg_re_3W060BR_f.jpg
I bought mine because I love cargo pants but the nature of my work sometimes (running wire through the interior of aircraft) can be a pain in the butt for wearing nice cargo pants, and getting the occasional stain from oil or hydraulic fluid, or a tear really pisses me off when my pants happen to be a $60 pair that I use for casual dress on occasion. And as has been for me the past year and a bit, I am buying stuff I can wear out and about, wear to work, and have some use in airsoft (lots of OD fleece, rainwear, etc. I have been buying.) Occasionally games are held around here where one or two teams must wear some solid colour pants with a camo top, or no camo at all (Contractors/Mercs/Etc.) This was my main reason for looking into these pants, something rugged that I won't mind getting dirty in, that will stand up to wear and tear from playing.
Oh ya, best thing about these pants? They come in shorts, as well as flannel lined versions too. Guess what I'll be buying in the next few months! ;)