From the century, the kotatsu typically consists of the electric heater attached to the frame, which is not limited to timber but may be made of plastic or other materials. Generally, a blanket (or shitagake) is draped across the frame and heater and under the table-top. This very first blanket is coated by a second heavier blanket, called as a kotatsu-gake (火燵掛布). Kotatsu-gake often are decorative and may be designed to match dwelling décor. [9] A person sits on the floor or on zabuton cushions with their legs under the table and the blanket draped over the lower body. The kotatsu was designed when people most commonly wore traditional Japanese style clothes, where the heat would go through the bottom of the robes and rise to exit around the neck, thus heating the entire body. Most Japanese home is not insulated to the same amount as a Western domicile and does not have central heating, thus relying primarily on space heating system. A kotatsu is a relatively cheap...