Not long enough
For what I paid I expected soft and no pain.  This is stiff.  Especially stiff when too short for my chair and the hard edge is felt in the front above the knees.  Two more inches and I may not feel that as much.  I am not impressed.  I am always in pain and this is worse than tempurpedic. So back to a newer tempurpedic seat.  I cannot return as the kids surprised me and took tags off and had it in the seat when I got home.  So stuck with this item.
Rating: 4 stars