They are actually called "Fun in the Sun" passes and are good for 30 days. They include all four Disney parks, the water parks, PI, DQ, Wide world of sports and a free character breakfast and some other places like Kennedy Space Center. They were originally intended to be marketed in countries other than the US, but Paramount Int'l Travel sells them to US customers for 311.00/adults and 251.00/children and a $15 shipping charge.
So you can see it is a pretty good deal. If you want more info you can look at mousesavers.com, it lists everything about them.