I used these for a few months, and they were OK. Easy to put together. But you have to watch when you sit that you don't knock it over. Also that might be a problem because I"m short and I kind of have to hop onto these.
They also showed a little more wear, some wrinkling in the material for just a few months use.

I'm selling them because I changed to a regular height table, so I don't know how they hold up long run. 

Pros: Easy to assemble
Cons: Could be heavier, material stretched a little too much.