We purchased two of this mattress king size. The mattresses came and felt really good. However the firmness does not hold. After only two months of use, the center of the mattress is already bend. My husband is 170 lbs and i am only 120lbs. And both our mattresses have same issue (i’m taking care of our newborn currently so we sleep in different rooms). I would choose a different brand next time. The extra firm of this mattress is not like people say sleeping on the floor. This firmness is still soft compared to what we have in Asia. And it does not hold its firmness for even 2 months.