I am glad I own these but I give these a mixed review because they Do have drawbacks.  One practically always has to use them with both hands. , putting on and off.  They are not super easy to put on, like reading glasses hanging on your chest by a cord or laying on the counter 'right handy'.  But they are always there and not swinging around by a cord.  They stay high on your neck and do not tend to catch on things.  The neck band can be bothersome but it's design is wonderful; the magnets are always aligned and glasses don't tend to slip off one's nose.  They are still rare enough to be a good conversation piece.  jvm