The quality of this mattress appears to be fairly good.  The stitching appears strong and the mattress seems to be quite firm but comfortable.  I say 'seems to be'.  I haven't actually fully unwrapped it. This mattress is.... enormous. There is no other word for it.  It is heavy, it is huge, it is about three times the depth of my previous mattress.  The delivery was marked as a one man drop but kept being delayed or not appearing when it should.  When it finally did arrive, I understood why.  It took two men to carry it into the house, and they struggled.  They very kindly carried it upstairs for me, but sadly I just cannot manoeuvre it by myself so it has to go back.