In the '90s, when Metallica was singing about the sandman, the only way to snag a reliable mattress was to trek ... if you’ve ever slept on a cheap pull-out bed. You deserve better, my friend.” ...

The mattress is 52-by-71-by-5 inches — a six-inch-thick mattress will not work. Is there a way to get a replacement mattress ... trace that number to figure out who made the mattress.