So far great, I have it on an adjustable bed, which I spend a fair amount of time on in the upright position which messed with my memory foam only bed quickly (because of a back problem ( scoliosis) and have foot neuropathy with osteoarthritis combined) I went through two memory foam mattresses in 6 months. This hybrid one so far is much better, have had now for a month and 1/2. Wish I had made this choice with GhostBed for the 1st time I bought a mattress for my adjustable bed.
For someone who doesn't have back problems the Flex would be perfect. It's comfortable, soft. However, you sink around 6 inches. If you are a restless sleeper it will keep you in the same place causing you to wake up.
We love our new bed! It got here very fast, sooner than expected and was very easy to open and put on our bed. We did have to let it air out a few days for the chemical smell but we knew that ahead of time from other reviews. It is sooooo comfortable to sleep on! It hugs you but still stays firm enough. We also got the ghost pillows which we ! We got the memory foam pillows as an additional purchase and I would not recommend those. They are stiff but do not give great support. Highly recommend Ghost bed for the comfort, quality and price!
I wasn't sure about a bed being delivered in a box but I am pleasantly surprised. It's very comfortable and was able to get a good nights sleep the first night.