1. BEFORE YOU BUY - ask yourself this qn: do you want a $14 lap table that easily gets scratch marks after 5 uses? I use an elegant MacBook Pro so it's definitely not my fault - it's the poor plastic material of the table.
2. BEFORE YOU RIP OFF THE WRAPPING - squeeze the two cushion bars at the back of the table hard and make sure that the tiny sponge balls inside don't leak out, because mine do! I had to do some stitching to stop the leak.
Bottom line - it gets the job done, but I would spend <$10 (or purely with BestBuy credit) on this.