Much depends on how you want to use it. You can easily roll or unfold a futon onto your floor or a thin mattress or mattress pad. However, many like to use a futon frame, which holds the futon much like a regular bed. Futons intended for use on a frame are best to be the thicker American types with a depth of around 6 - 8 inches. Only these can protect you from the pressure of the frame.