To provide a chair which is used during having shower and can easily change the positions of armrests according to the use's figure and the using situation.

A center 8A of an armrest member 8 which forms armrest parts 9, 9 curved in U-shaped at both ends of a pole or pipe material is fixed to the rear face of a seat 2 and makes the armrest parts 9, 9 standing up from both sides of the seat 2, and the center 8A of an armrest member 8 can be also fixed to the rear face of the backrest 4 and makes the armrest parts 9, 9 projecting forward from both sides of the backrest 4.