To be honest, I bought this on a whim.  I was getting sick and tired of my cats knocking my glasses off my end table or me just not being able to find them for whatever reason.  When I saw it, I thought "what a brilliant idea!"  Why didn't I think of this?  The base is attached via magnet to the main compartment.  I have yet had them separate without some decent use of force on my part.  It gives me a perfect place to put my glasses in at night and now I do not have to worry about where they are in the morning.  My only regret is not getting something like this sooner.