Abstract: A swayable backrest includes a backrest frame including two spaced vertical tubes each having a lower end attached to the seat of the chair. Each vertical tube further includes an upper end with a first hole. A hollow connecting beam is connected between the upper ends of the two vertical tubes and includes two transverse slots. An attaching member includes two ends each having a second hole. Each end of the attaching member is extended through an associated transverse slot. The attaching member is attached to a backrest of the chair to move therewith. A pivotal tube extends through the first hole of each said vertical tube, the second hole of each end of the attaching member, and the hollow connecting beam, thereby allowing pivotal movement of the attaching member relative to the backrest frame.

Abstract: An adjustable armrest assembly includes an armrest main body having a compartment therein. A positioning member has an end slidably received in the compartment. The end of the positioning member includes a vertical slot consisting of a number of consecutively connected vertical retaining holes. Two adjacent retaining holes have a reduced neck portion therebetween. A locking member has a relatively larger section and a relatively smaller section. The relatively larger section of the locking member is normally biased to engage with one of the retaining holes. When an operative member integral with the locking member is manually operated, the relatively larger section of the locking member is disengaged from the retaining hole, and the relatively smaller section is moved to engage with the vertical slot.