Chaise longue comprising a sofa frame (2), seat part (4) and back rest (3). The seat part (4) comprises side bars (9a, b), cross bars (10a, b) and seat springs (7). The seat part (4) is rotatably connected to the sofa frame (2) by means of mounting devices (8a, b) below the sitting surface of the seat part. One or more balance springs (14) are arranged between the seat part (4) and the sofa frame (2). A shutter or flap (16) is rotatably mounted to the seat part with pivotable joints (17a,b). The flap is furthermore rotatably connected to the sofa frame in point at the opposite end from the joints.