Great cushion but
This cushion is great, it makes sitting at my desk all day so much easier.  The downside is it constantly moves, there needs to be a way to attach it to the seat bottom.  The side that is supposed to grip does virtually nothing, every time I move it moves, every time I get up it moves, becomes very annoying fighting with it all day.  If I wasn't dealing with that I would probably enjoy it more.
Rating: 4 stars