I use these knee pads for paintball. For the regular stuff such as kneeling on rocks or sticks in the woods, taking a knee between games, etc, these things are without peer. They are comfortable. I did not have one instance of them sliding down and needing readjusted. Today, I had my first equipment failure with these. I was playing a game in the rain. I was running on a wooden ramp that was slippery from the water. I slipped and fell approximately three feet and landed knee first on the ground. I didn't feel a thing, besides a little jarring from so far a fall. My knee was fine. I've included a picture so you can see how the pad failed. The rivet that holds the strap popped right off the knee pad. I can't blame the knee pad for this. This thing gave its life for my knee. Thank you, Alta. Great product. I'm buying another pair.