ergoCentric tCentric Hybrid Multi-Tilter Ergonomic Office Chairs, Fabric Seat/Mesh Back Air lumbar support allows the user to vary the depth of support that naturally positions the lumbar spine for additional support and comfort.Pneumatic seat-height adjustment from 16 1/2" to 21 1/2".Knee-tilt movement adjusts from a pivot point at the front of the seat and allows the chair to rock while your feet stay on the floor. Combines the best attributes of the leading mesh chair with the industry leading benefits of ergoCentric''s fully ergonomic upholstered chairs.Tilt tension with forward and back seat tilt.Tilt lock control with infinite positioning.Seat depth adjustment allows seat to move in and out up to 2-1/2".Seat angle adjustable .Back tilt adjustment moves independently of seat.Adjustable arm height and width up to 2" per arm .Dual-curve backrest adjusts vertically to help ensure lumbar support and remains in alignment with frame''s lumbar curve.Waterfall seat edge reduces pressure a
