I have the
best knee pads, one strap above and one bellow the knee. They don't move, don't twist… when they were brand new I just let my legs go limp and hit the steel kneepads first. Just as a test. Barely felt a jolt. There a bit more worn down now so I don't do that anymore but they are the best. They are also currently up three ladders and down five flights of stairs
luckily, like I said, there was almost no work in here. And even less that required crouching/kneeling. Just last week was spent like half on my knees and they're still grumpy about it.