A zaisu (座椅子?) is a unique form of Japanese chair which has no legs, but has a normal chair back. Traditionally, the Japanese would sit in seiza (正座?) or 'correct' sitting style, kneeling with their weight on top of their lower leg, which is folded underneath the body. However this can become painful after long periods of time or for people who are not used to it, so many prefer the more comfortable zaisu option where the back is supported and legs can be sprawled in front. Zaisu come in many styles, and can either have a cushion built in or be used with a zabuton (座布団?). For an even more relaxed seating arrangement, one may also use a Japanese style armrest called a kyousoku (脇息?).
- Irasshai. . Retrieved August 31, 2007.