I was skeptical of a relatively inexpensive mattress delivered by mail in a box, but this mattress is comfortable!  It makes no noise and motion does not transfer.  It's also not hot.  My husband has a bad back and normally likes a firm mattress, but he likes this one.   I prefer a softer mattress and I like it too.  It's really a happy medium between firm and soft.  The mattress is not quite 10" tall, more like 9" so the bed looks a little short compared to the 13" mattress that I replaced.  I have the new mattress sitting on my old box springs and it works fine.