Safco® Height/Width-Adjustable T-Pad Arms for Safco Optimus Big/Tall High-Back Chairs, 4 x 10.25 x 11.5 to 14.5, Black, 2/Set (SAF3591BL) EachSafco Optional Height and Width Adjustable T Pad Arms for Optimus Big & Tall Chairs Optional height and width adjustable armrests provide custom comfort and help reduce strain on neck and shoulders. Attach easily to Optimus Big & Tall chairs. Global Product Type: Chair Arms Series Name: Safco Optimus Color(s): Black Color Family: Black Material(s): Polyurethane Overall Width: 4" Overall Depth: 10. 25" Overall Height: 11. 5" to 14. 5" Chair Accessories