Ergonomic Chair With Flip-Up Armrests

90° flip-up armrests.;; Adjustable reclining backrest.;; Height-adjustable lumbar support. ;; [product_specifications] Seat Dimensions 19.69" (W) x 20.47" (D) Seat Height Adjustment 20.07" to 22.83" Backrest Reclining Angle  90° to 120° Lumbar Height Adjustment 2" Headrest Height Adjustment 2.4" Armrest Flip-Up Angle 90° Max. Load 300 lbs Net Weight 28.48 lbs Product Material Plastic, Iron, Mesh, Sponge Extra Features Cushioned Lumbar Support & Armrests