I use my computer for work everyday (5 days a week) and average about 12 hours a day.  I've been using this mouse pad for over 10 years now and it is still in very good shape.  I will say that it does not work terribly well with a cheaper optical mouse, but it works flawlessly with my razer naga.  The wrist support is still firm but soft and it is in very good shape except that the material is difficult to clean.  Which is no big deal because it doesn't effect the way it works, it just looks dirty.  This mouse pad has without a doubt kept me from getting carpal tunnel, and I would recommend it to everyone who uses a computer for any substancial ammount of time.