I had to level a cement floor with a 1 inch dip in the middle of the room which meant alot of time on my knees. I bought some Harbor Freight pads (midprice pads as the cheap ones, I had used previously, were shot) but the ill fit caused more of a problem and I didn't want to get the expensive pads @ Home Depot - that were only going to be used a few times.
The discomfort was considerable that within 2 days; I pulled the trigger on these as the price was right and the reviews were favorable. I took a gamble and it paid Off - Big Time. I was able to focus on the task at hand & finished the job with my knees intact. My only beef is that one pad kept sliding down (Left, slow creep) and the right stayed on - didn't move a bit. I would still BuY AGAIN.

Overall for the price these are decent, and you get what you pay for. I believe they're priced fairly for the quality of product you will be receiving. I haven't been able to wear in the field and rough them up a bit and will update my review accordingly.
The actual front "camo" material of the item is unfortunately not ripstop material and doesn't seem to be very durable, similar to a nylon cotton mix but I'm not for sure. If walking through thick brush and thorns I would imagine they would be ripped up fairly quickly, and will update with my experiences. The camouflaged portion seems to be relatively faded as if it's been washed 100 times. I'm sure rolling around in some dirt would help with concealment but they do work with OCP/multicam pant legs.
All the sewing seems to be single stitching, and the actual knee protector seems to be secured into fabric cushion via some pushed through button? Not sure exactly how to describe it but it seems relatively secure but I'm sure I could yank it off.
The knee protector is relatively mailable but definitely protects as designed. The dark tan protector will become very scratched up with use as I am able to scratch it with my fingernail.

The back straps are decent and don't appear to change length with ease during use. The top portion that goes over the thigh is stretchy and greenish while the lower leg strap is completely firm and tan. There is Velcro at the end of the strap to "secure" the extra portion of the strap to itself but I'll probably just cut mine to fit and duct tape the remain portion.
If you're wearing OCP's then you still have access your thigh pouch, with the thigh strap covering maybe a half inch of your bottom thigh pocket. I would assume different pant sizes probably effect pocket coverage differently.
The knee pads sit nicely into each other and have a pretty low, flat profile if you're storing them inside of your ruck/bag. These can be flattened with the mailable protector.
Overall comfort seems to be decent and these don't seem to want to spin or drop too much. I wouldn't deploy with these but for rummaging around in the field they're a decent knee pad.

Bought these after seeing them recommended on a few YouTube gear channels. I've used cheaper knee pads sold in the home-improvement stores but the knee cap on them was too domed, making me roll my knees too much. These are much, much better as the knee-pad is more flat. Wherever you put your knee, it stays there. They're also very low-profile so they're not going to get in the way if you have to hop in a vehicle with them on.

The AltaLOK fasteners are wonderful. Most knee pads have straps that just velcro down, causing them to bunch and twist when you kneel. The AltaLOKs allow the strap to rotate and move with your leg, keeping the strap in place and tight. It is a bit disappointing that the buckles on the strap are plastic though. The studs on the pad are metal, but the buckles are plastic so I have concern of how long they'll hold up. A cost-reduction measure I'm sure, and plastics/polymers have firmly supplanted metal in many applications without issue. That said, I'd still rather have metal.

Lastly, and this is an observation not a complaint, the knee pads are not side-specific: the buckle and stud are on the right-hand side (as you're wearing it). I suppose that's a good thing because they can crank out more per day instead of having separate right and left production lines, and it's one less issue to deal with putting them on.

Overall, I'm satisfied.

I have several pairs of these ALTA tactical knee pads and they are my favorite for everyday use. I always keep a pair in the truck and a second pair in my tool bucket for work. I also keep a pair in my shed for gardening and lawn work as well as two pairs in the basement for other work around the house. I have very bad knees so need to wear pads whenever I'm on my knees, even if it's just for a couple of minutes. Compared to other knee pads I've tried in the past, these ALTA pads are very light and comfortable enough to use all day. They don't constantly roll from side to side like the thick Gel filled pads tend to whenever you shift your weight or reposition your knee. The adjustable elasticized straps have clips that lock over metal studs to hold them on the knee. They will snug down securely to hold the pads firmly in place even when I'm continuously up and down and walking from one place to another on the jobsite. The quick-release strap attachments allow the pads to be put on and removed quickly without the need to readjust the straps every time. The neoprene pads on these also won't soak up moisture from wet surfaces or scratch finished floors. Overall, I'm very pleased with these knee pads and will definitely purchase again.

These knee pads are excellent! I use them for work, for shooting, and for anything that requires my bony knees to touch the hard ground. They are super adjustable and don't slip down or up. They don't slip even if you are performing fast vigorous maneuvers. Here's a photo of how they look after about two months of painting, shooting, and hardcore 10-12 hour use. Don't buy Arc Teryx, don't buy the other expensive brands.... I've bought them all and Alta makes the real goods.

UPDATE!!!: So, bad news about my fave knee pads. I owned these from July to October 6th when I'm writing this update, and they just ripped in the same spot on the inside of the pads on both pads. I will show the pictures. This is very depressing since I can't return them, however I am going to contact Alta and see if they think this is a defect. For the amount of time I used these pads which has been maybe a hundred hours or a little more of kneeling while working and painting and also doing some shooting training, I am surprised that they are ripping in this area. In any area at all it surprises me. So that's the update, maybe I'll a different model that doesn't have the "fast" snaps, though that's one of my favorite features of these pads.... disappointing. Seems you can't use anything very hard without it ripping or degrading nowadays.