A respiratory mask assembly (10) for delivering breathable gas to a patient includes a frame (20) having a main body (20a) and a side frame member (20b) provided on each lateral side of the main body. Each side frame member includes an integrally formed first connector portion. A headgear assembly (80) is removably attachable to the frame (20). The headgear assembly has a second connector portion (82) arranged to be removably coupled with the first connector portion provided on the frame. The second connector portion is manually movable to a releasing position to detach the headgear assembly from the frame, The headgear assembly is rotational adjustable with respect to the frame.
