| 摘要 |
PURPOSE: To provide a bathtub of which inner wall surface form can be changed freely to be used comfortably in accordance with each user's liking or need. CONSTITUTION: A bathtub includes a deposited layer of grains 2 in a tank body 1, where an average thickness D1 of the deposited layer is set at 10cm or more, with an average depth D2 of an upper surface of the deposited layer from an upper edge of the tank body 1 set at 20cm or more. By freely changing the form of the deposited layer of the grains in the tank body 1 in accordance with a user's liking or need to provide such effect that an inner wall form of the tank body 1 is changed, the bathtub can be used comfortably and safely in an easy attitude in accordance with the purpose of the user. |
