Abstract: In order to provide comfort during prolonged seating periods and facilitate proper sitting posture, a chair is configured to include a central chair portion defining a pair of seat back mounting sections, a pair of front leg mounting sections, a pair of rear leg mounting sections, and a seat surface. A seat back including a pair of seat back extensions is provided, with each of the seat back extensions mountable on one of the seat back mounting sections. A pair of front leg extensions is mountable on the front leg mounting sections of the central chair portion, while a pair of rear leg extensions is mountable on the rear leg mounting sections of the central chair portion. Such a chair construction permits the seat back, the front leg extensions, and the rear leg extensions all to be adjustable relative to the seat surface and lockable in any of a plurality of discrete positions with respect to the seat surface.

Abstract: In order to provide comfort during prolonged seating periods and facilitate proper sitting posture, a chair is configured to include a central chair portion defining a pair of seat back mounting sections, a pair of front leg mounting sections, a pair of rear leg mounting sections, and a seat surface. A seat back including a pair of seat back extensions is provided, with each of the seat back extensions mountable on one of the seat back mounting sections. A pair of front leg extensions is mountable on the front leg mounting sections of the central chair portion, while a pair of rear leg extensions is mountable on the rear leg mounting sections of the central chair portion. Such a chair construction permits the seat back, the front leg extensions, and the rear leg extensions all to be adjustable relative to the seat surface and lockable in any of a plurality of discrete positions with respect to the seat surface.