Single futon mattress is available in two sizes. Either 2'6" / 76 cm or 3'0" / 90 cm are the widths and 6'3"/190 cm long.
Options for firmness and therefore comfort are there for you to choose. The Regular is an option for use as a single bed for all ages or folded to be used as a chair.
We have developed a filling that includes a low profile pocket spring layer called flexi pocket. Since it is springy it is also softer as a result if that's what you prefer.
Another in house developed filling is a cotton/polyester blend. Baked to a temperature that gives a characteristic so it prevents compacting. This then helps the mattress to keep its shape and form.