Both hubby and I have issues with back pain and this mattress have definitely reduced pain while sleeping. We've both seen an increase in the quality of sleep and LOVE this mattress. We got the medium firmness and it is perfect for both of us. Although it does "sink" it does so in place when you first sit on it and bounces back immediately. Biggest challenges were height from the floor and linen! Thankfully we did have on hand a few linen sets that just fit (california sized) and I (the short one) bought a step stool for my side of the bed. We got the mattress almost five weeks before we were able to put it up and thought we would have to wait a day or two for it to "inflate". Nope. It inflated to its full size as soon as a we took the wrapping off so be sure you open it in the room in which you intend to set up as it is pretty heavy. I highly recommend this mattress and soul purchase again.
I purchased this mattress in the queen size while in transition moving to another state. We bought the metal mattress frame for temporary use. We were staying with family while waiting to buy a new home. It is the most comfortable bed I've bought. We got our new home and we are putting it in the guest room so I purchased the California king for my bed. Both my husband and I love it.
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