The first thing you should know about futons is that they come in pretty much every standard mattress size available. There’s the classic single futon mattress, full, queen, and even kind size futons. Probably the most common size is the single futon as these are a common choice for students, single adults, and pretty much anyone who wants a cheap comfortable, and space saving bed.
After you’ve decided on size, you’ll want to choose the futon thickness, and type of filling that best suits your needs. If you visit any reputable futon company, they’ll likely have at least a few different options for you as far as what’s inside the mattress. Essentially, the vast majority of futon mattresses are filled with a combination of foam and cotton. It’s not as simple as that however; more specifically you’ll need decide what type of cotton and foam are you looking for as well as how many layers of each.