9 to 5 LOGIC Ergonomic High-Back Task Chair (1780)

Ratchet back lumbar height adjustment on select models Warranted up to 300 lbs.   Classic DesignThe Logic collection of task, conference, and stool seating comes in multiple sizes, including plus-size and multi-shift options.  A wide variety of back, seat, base, arm, and control options create an assortment of ergonomic opportunities that make Logic more versatile and comfortable than any chair in its price range. Ergonomic DesignLogic is loaded with ergonomic options including multiple controls, adjustable height ratchet backs, adjustable arms, and seat sliders. Multiple controls including basic task, multi-function, and synchro tilt are available. The height-adjustable back on some models provides lumbar support and is easily adjusted from a seated position. Design for ComfortThe seats and backs are made of highly resilient molded foam. A waterfall seat promotes circulation and good health.  CustomizationLogic combines comfort with customization. Logic covers all body sizes and wor