Nawrockiwrote a review of Troy Lee Designs Lopes Signature Knee Guard on August 26, 2013
Familiarity: I've used it several times
The design is good. You put the neoprene knee pads on and the knee/shin guards are held in place. The guards are good. The underlying knee pads wont last two rides as the stitching will fail almost immediately. I like them enough that I'm not returning the second pair, just sewing them up myself, but this is pretty bad manufacturing quality.