I had injured my knee and was looking for a kneepad to protect it while surfing. I did a search on amazon and came across this neoprene pad. It is not exactly the use the manufacturer specified it for (wrestling I believe) but it works great in the water, it is very comfortable and I would highly recommend it to anyone else.
The only problem I have had with it is the tendancy for it to slip down when hit forcefully with water at a downward angle but that is not a problem that occurs regularly. 4 stars