Office Master Discovery Back DB74 Ergonomic Task Chair seat-wedge Yes — the adjustable steel

Yes — the adjustable steel frame molds to your exact lumbar curve

consistent mouse tracking surface

Knees should be at 90° angles or slightly open (95-100°)

and no frustration

Office Master Discovery Back DB74 Ergonomic Task Chair seat-wedge Yes — the adjustable steelView Our Chair Fitting Form Click Here Contoured Mid Back Support for All Day Professional Comfort The Office Master Discovery Back DB74 is a mid back ergonomic task chair built around the Discovery Back a contoured backrest design that follows the natural curve of the spine to deliver targeted lumbar support throughout the workday. For standard height professionals who need a chair that actively supports their posture with precision adjustability and