Pu Upholstery, High Density Sponge Inside 2+6mm Double Plywood Backrest Board+15mm Plywood Seatrest Board Aluminum Chromed Armrest Frame Multi-Function Mechanism: Up And Down, Tilting Adjustment With 5 Different Angle Aluminum Gas-Lift, Available Distance : 60mm Aluminum Chromed Star Base Pu Castor with Chromed Finished