Not all futon mattresses are created equally. Futon mattresses can be used on either a futon frame for sitting and sleeping or can be used on the floor, or platform bed frame and even an RV camper, tent, moter-home or cab truck. Futon mattresses can be classified by by cotton based, High Density foam (no cotton), innerspring, memory foam and organic. Dr. Futonberg is not the biggest fan of innerspring futon mattresses. The Doctor "futonologist", gives his expert non biased review for the top futon mattress models by the top rated manufactures. Out of more than 50 futon mattress models, he chooses the best 8 recommended models for use on either sleeping on a platform bed frame or bifold futon frame.