The Good: Tough, rugged, stout, kevlar stays in tact, pads stay in place, cheap
The Bad: Bulky which leads to sweaty knees in warmer climates, slide on only so you have to wear them all the ride.
I finally got tired in my old age of wrecking(especially in wet winters) and bruising or scraping my knees. No, I'm not down on my knees as much as you may be thinking. But on a slick log over in December you can end up bouncing all your body parts and bruising more often than not. Also, with the advent of enduro riding(sarcasm) you just HAVE to have pads now, right? Not one to be left out on the trend I got my 800mm bars and knee pads.
All kidding aside these things have fit well from day one. I don't have robust legs and wear a size medium in these pads. They have always been good about staying in place and don't feel obtrusive while pedaling up hill. As a matter of fact they feel comfortable in all situations. The only time you're REALLY gonna notice these is on a warm day and having to pedal hard. These aren't very breathable because they have protection everywhere but right behind your knee. So you are going to sweat in these bad boys. But the protection is worth it. It's a hard plastic knee pad surrounded by a kevlar cover and believe you me that kevlar works! I have had some high speed wrecks where if I wasn't wearing knee pads my knees would be torn up. The side pads do their job as a firm foam.
These come in at a great price point and hold up over time. After a year and a half and at least three major wrecks(with a broken clavicle in there) they show one nick on the left pad. I know I've ground to a halt on the pads twice and you wouldn't even know it. I keep washing them and they look just as good as day one. I highly suggest these to anyone. If they could make them so that you don't have to slide them on and they would stay in place I'd easily give these a 5. Otherwise they get a 4.5. Superb product.