This mattress pad hugs you like an old friend. The size was perfect for our king mattress. We have a fairly thick mattress, but obviously this one is made to accommodate even taller ones. We had been without a mattress cover for several weeks. So, sleeping right on the mattress itself, even with the pillowtop, just did't cut it. This nice cover added enough loft to make us feel as though we just bought a new mattress.