Right now, it is on top of the bed slates and seems to be sinking through them.

It was a custom made mattress (a 3/4 size) for an antique bed. You have no selection for that in the list below, btw.

WAY overpriced for what I received.

continuation of the "con" from above:
, but a 9" tall one that boosted the bed above the back of the headboard. It had no springs in it, and was, in fact, cheap wood with a piece of cardboard on top.

Save your money and order your mattress only, if you must buy a custom from this company.