A booster seat has a seat member (14) and armrests (12a, 13a). The distance between the armrests (12a, 13a) can be automatically changed according to the height of the support portion (14a) of the seat member (14). The armrests (12a, 13a) are formed on sid...

The seat holder consists of bearers connecting the seat (1) to a fixed base (12). It has a setting device (14) enabling the seat to be adjusted roughly in the direction of the vertical axis (Z) of the vehicle between two defined height positions relative t...