Knee Pads
From Pvdwiki
Protective Gear
While it is not considered "cool" to wear protective gear, it is smart.
Boneless is another brand although not as nice. A lot of pro's use them, but money talks in the pro game. Harbinger is also another. I like their elbow pads, but the knee pads are oddly shaped. Pro-tec is an old name in helmets and make pads that are good for kids or super light duty protection, they are not real vert pads. The ramp pads have gotten better and are a good recommendation for the local kids.
The Rollerblade line of pads are probably the worst pads in existence. The huge knee pads are about the silliest things in the world and they look like they weigh 30 lbs each.