When I looked up reviews on this mattress it looked really good.  On closer inspection after I purchased- I noticed many of the reviews are for different items- not this mattress!
This is not a medium firmness, it is very firm with no give.  We ordered the full size 10" Rhuddlan Medium Mattress Gel Memory foam.  We will be returning it.
On the plus side, it is a good quality mattress.