We thought that other than how it felt to sit on the seat, another major factor for relaxing time would be how comfortable the backrest felt. In particular, by increasing the back’s cushioning, the cushion fits the user’s body well. It solves a difference in comfort depending on the user’s body, making the user feel like they are sitting on a sofa. The cross-sections of the front and rear legs are elliptical so that the edges of the legs have thin lines from the front view, making it look sharp, and from the side view, the oval shape makes the chair look soft, with the entire frame being smoothly connected.