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.

If I could give more stars I would. I have back issues and beds are worrisome issue for me. I was hesitant at this purchase but now I want to scream about it from the rooftops. My adjustable base is the best also... loving the built in vibrators!

This bed is so comfy. I can sleep on my side without waking up with shoulder and hip pain. First time in many months!! Provides support without feeling like your sleeping on a board. Frame set up was a little tricky. Very satisfied with my purchase.

This mattress is wonderful! It has helped me and my husband sleep so much better- no more waking up hot in the middle of the night, comfortable for all sleep positions, and barely moves when the other person gets up.

We absolutely love this mattress! I like a firmer mattress and my wife prefers a softer mattress, this was the perfect in-between option. My back and leg pain has absolutely vanished!

My husband and I loved our new split King mattresses. Very easy to unwrap the mattresses if you do it correctly. All you have to do is unroll the plastic from the mattress. We cannot be happier with our purchase.

Coming up on my first 30 nights, I'm not getting the whole 'best for pressure relief. ' This has been good for my lower back pain, but too stiff for the shoulders and neck.

I am really enjoying the comfort of my new Ghost Bed, and the adjustable base. It has been so much easier to fall asleep. Definitely a great investment.

Bought three ghost beds for a house we are offering for rent on Air B & B. Want to make sure everyone gets the same good nights sleep we enjoy every day.

I was nervous ordering sight unseen, but I wasn't disappointed. Ordering of the king size Lux was easy, getting it up a curving staircase, not so much. I think the pillow is cooler than the mattress, but certainly not disappointed with our choice.