The Very Best
There is only one reason you would want such a wedge cushion: to help you to more perfect balance while sitting (not to cushion the tush) and thus perhaps to reduce back pain and stress you might experience.  Thus there are only 2 requisites: (1) It must have an angle sufficient to tilt the body forward and (2) it must be firm enough so that such an adequate angle is not lost when putting the body's heavy weight on it.  I have tried all of the wedge cushions offered anywhere and they all fail this test --- with the exception of the Core 5405.  It is as close to perfect as it gets.  I would love to see a version that is covered in fabric, since the foam can show signs of edge wear over time if it is not covered.
Rating: 5 stars