Had high hopes for this mattress but looks like I will never purchase a mattress online again. It is shipped rolled up in a box (which was listed in the description and I was ok with that)  instructions state that it needs to sit for about 48 hours to fluff up to its natural form. After unrolling it and letting it sit for 3 weeks untouched it has never regained it's 8" thickness.  At best it is 7" and contains dips in the mattress. Not sure if it loses its thickness due to being rolled up for so long or some other reason but this experience has made me not want to purchase a memory mattress (or any other mattress) online again.