It's not the best or the worst
It's not the best or the worst. Initially comfortable, but after hours of working at a desk/computer, and also using it to drive long-hours, it's not worth the high price.  I'm still looking for a better alternative.  At first, I looked at buying a Purple mattress, but decided to try the seat cushion first.  I am very grateful for that decision! I will NOT be buying a mattress of this material: it's rubbery and builds up heat, making it as uncomfortable as other dense foam products.
Rating: 3 stars