I have Kangaroo/Khaki, 2 pair solid black, 1 pair Ranger green. I have worn the Kanga/Khaki pair for over 3 years almost straight through, maybe 150+/- washes and dries (in a dryer) and they have held up fabulous muhy dahlings... only complaint is after about a year the velcro on the two top flap front pockets L/R gave out facilitating the possibility of items falling out - say when inverted = DON'T ASK, LOL! - OK you CAN ask, but I'm probably not going to explain that particular sitrep, it was hilariously horrifying and quite a near life experience, yes that's right, a near life experience, having said all that, the velcro is pretty easy to remove/replace if one if so inclined, I managed another aspect to remedy it, and it works well. The first black pair I wore 6 hours a night, high heat, lots of contaminants - nothing caustic, etc., for oh... 10 months straight, every night it seems... they have stood up well and even took a very sharp and I mean sharp stainless corner rip right upper thigh - but it still got me = MUCHO OWWIE!!! Anyhow the tear STOPPED RIGHT THERE = rip stop test confirmed, of course to a certain degree. Ranger greens I am just breaking in, still a bit stiff, ran slightly just a wee tad smaller, than K/K's or blacks, though the waist is adjustable - again with velcro tabs L/R. Got an extra pair in black in the last of my last GTFOD GEARS & BAGS, they'll last, I'd say these pants, depending on daily activity will ride out 1.5-2+++ years depending on what you are up to. Zippers have all held up well on all pairs and good luck, no really GOOD LUCK trying to even wear a hole in the knees from just one/two k-caps down work, mine are barely starting to show wear - if even. Get some, get alot, I have. the belt loops are large, however not all tac-belts will easily slide through, there's not really a standard for that aspect of things on commercial/civilian - YET. But now that I typed such there will be! : )P WATCH FIRE THOUGH - as like... with... EVERYTHING... LOL! Dropped some cigar ash on top pocket and it sat there and I let it to see what it would do, the fabric sealed itself preventing a hole from fraying and tearing, etc.Like I'm saying - GET THEM.OH! And rear pockets are H-U-G-E... as in say... rather large and things fall out if not mindful = I am going to simply burn little holes in the fabric and run some toggle cord through the L/R rear pockets, and the pants body so I can semi-cinch pockets up to better retain larger items I may bum carry with a simply toggle catch. With the fabric the way it is, should work out well.