I ordered this cushion for my office chair.  I know it is a cushion for outside, but this cushion looked very comfortable and firm, not like the usual cushions that are too soft and mushy.  Well, the cushion is perfect.  It is very firm and very comfortable.  In addition, it is a thick cushion and raises me up on my chair so that I don't have to keep looking up to see my monitor. The pneumatic lift on the chair did not raise me enough to be even with the monitor and I kept having to look up which was hurting my neck.  This was the perfect purchase.