Anybody who has ever worn knee pads for a living hates wearing knee pads. This is why you never see people who have a choice, choosing to wear knee pads. Wearing knee pads suck and if you buy them you will soon find this out and will quickly stop wearing knee pads. in fact, crawling around on knees suck which is why I don’t do it with or without knee pads while fishing. I’d rather not catch a fish If it meant I had to crawl to it. For those who can’t resist fishing from their knees, along the lines of what bamboozle stated, 5.11 makes a tactical pant that come internal knee pad ready. The pants seem a little pricey but I wear 5.11’s daily and I can say you will never wear them out in a decades worth of fishing trips. This is a much better approach then anything you have to carry or strap tightly above and below your knees. They also come with plenty of pockets and I think pockets are an anglers best friend.