Boss Norstar Executive Office Desk Chair With Hidden Storage Compartment In Back New! Hide-A-Back Technology / Black Caressoft Plus Vinyl Covering Hide-A-Back Measures 17 x 15 / Pneumatic Seat Height Adjustment Matching Padded Armrests / Silver Finish Base & Arms 360 Swivel/Tilt Control With Tilt Lockout & Tension Adjustment Seat Size 20 x 20 / Seat height 18.5 x 22.5