Abstract: An armchair is disclosed. The armchair has a seatback, a pair of armrests securely mounted on both sides of the seatback, a spring-like base securely and respectively engaged with the pair of armrests and a seat a side of which engages with a bottom side of the seatback and provided between the armrests. A pneumatic cylinder is provided between the seat and a joint of the seatback and one of the armrests, such that the inclination difficulty of the seatback with respect to the seat is adjusted via the adjustment of the pneumatic cylinder.

Abstract: A foldable lounge chair provided for both sitting and comfortable lounging positions wherein the back of the chair keeps upright while the seat is occupied and when the user lies his back against the back of the chair, the back of the chair inclines gradually backward and simultaneously makes the seat raise from its original lower horizontal position. When the back of the chair is inclined to the desired angle, a inclination setting button can be firmly fastened that the inclined position of the back may thus be set. When the inclination setting button is loosened, or the user no longer lies his back against the back of the chair, the back can automatically return to its original upright position. If not in use, the chair can be quickly folded flat for storage and carrying.