this thing is great. All I wanted was a flat surface that looked nice, right on the arm of my couch. This fits the bill. I also have a "curved" arm on my couch, and the 2 independent spring-loaded grips of this thing really grab on to the couch. I love it!
This is a great little table, perfect for those areas where you don't have floor space for a side table. The spring action of the legs allows the table to fit a variety of furniture. We have ours on an overstuffed loveseat where the arm measures a full 12 inches. The table sits perfectly in place and holds a coffee cup steadily without danger of spilling.
This is a very handy little table for your chair or couch. It stays on the arm very securely with the tension springs. We use it all the time for beverages and have never had a problem.