It’s a wonderful mattress very comfortable and just right for me I have a fractured spine as well as bad discs and a shoulder that needs replacing but am not able to have surgery because of my lungs..this helps take the pressure off of my back and gives for the pain in my shoulder and back.. I was able to actually use it the first night since I don’t weigh much it didn’t need to take the 48 hours it suggested I give it to expand.. I have been sleeping in a recliner and in the middle of the night my legs started acting up with restless leg syndrome so I said forget it and climbed into bed I slept wonderfully for the first time in months