Although many Japanese sleep in beds these days, it is still common to sleep on a futon mattress spread on the floor. Westerners call the small couch which turns into a bed a futon, but that is very different from the traditional Japanese futon. A traditional Japanese futon set includes shikibuton (under futon), kakebuton (comforters), and makura (pillow)... Shikibuton is usually stuffed with cotton batting and is wrapped in shikifu (sheets). Japanese uses different types of futon, depending on the season, such as light ones in summer and heavy ones in winter. Futon made from down feathers is light and comfortable but is most expensive. Kakebuton is covered by kakebuton cover. The traditional Japanese pillow (makura) is filled with red beans or buckwheat chaff... Futon is usually put away during the day in the closet called oshiire. The oshiire closet has sliding doors and usually divided into two shelves. It is best to keep the futon on the upper shelf. Japanese houses are usually small and do not have many rooms, so a room is used for dual purposes. During the day, a room can be used as workroom or guestroom after futon is stored in the oshiire. It is very convenient... It is important to sometimes dry futon under direct sunshine. You may ruin your futon if you keep them in the closet or spread on the floor all the time. Remember that Japan is very humid especially in rainy season. There is a product called futon kansouki (futon dryer) in Japan. Just place the dryer between kakebuton and shikibuton while it is spread on the floor. Airing your futon really helps you sleep well... Also, it is commonly said that sleeping on futon is better for the back than sleeping on a soft bed. The hardness of the floor seems to be good for people who have back problems.