I want to replace a futon. It is the old, thick cotton kind that became popular in the ’80s — no foam, no springs. Ten years ago you could look in the back of the sleazy local “alternative” newspaper and find ads for futon shops that would sell you a plain 8-inch-thick cotton futon for a modest price. Now I look and the shops are gone. On the Internet “futon” means a piece of furniture that incidentally has a mattress that kind of, sort of looks like the same type of thing that used to be called a futon. You can google “futon mattress” but these are now mostly pseudo-mattress contraptions containing springs or foam. I have slept on a foam-containing futon and it was comfortable, but I prefer all-cotton ones, in part because they all feel the same and therefore I know what I am getting. Further googling, on the term “Japanese futon”, yields better results, but the Japanese-futon merchants seem to be selling a much thinner futon than what I am looking for. They appear also to be charging a premium for the authentic Japanese-futon experience, which involves a tiny Japanese apartment where you sleep on an authentic Japanese futon on top of an authentic tatami mat and then roll everything up in the morning to make the most of your limited space. Thanks but I thought we had moved past that here. To use a cotton futon comfortably on a conventional slatted bed frame the futon needs to be at least six inches thick, preferably 8 or 9 inches. This is an American futon. But are they even available anymore? I can’t tell if the market has changed or if I am merely looking in the wrong places.