CAR SEAT SYSTEMS

A base (100) for a car seat comprising a lower part (101) adapted to rest on a vehicle seat cushion; and an upper part (102) rotatably mounted to the lower part (101), wherein the upper part (102) is shaped to define a void (110) in which a car seat can be received, the upper part (102) comprising a support part (112a, 112b), an annular member (103) supported by the support part (112a, 112b) and surrounding the void (110) and connection means (104) on the support part adapted for engagement with a securing means of the car seat.