This is my second Great Offer Stock mattress. My first was a queen mem foam of a different brand that I purchased 7 years ago. My hubby and I wanted to upgrade, so we moved the old mattress to the guest room and felt confident in ordering another on Great Offer Stock. We purchased the medium 10" and it is firm, but not hard. We both need something that provides back support, but don't want to feel like we are sleeping on the floor. This mattress gives a little, especially when it is warmer, but if you are looking for a plush or medium, I would recommend getting the plush or a different mattress. I really like this medium bed. We slept well and feel it will last us a long time.