Alpha Low Back Office Chair with Mesh Back and Fixed Arms wooden world map Material : Combination of MDF Style:E Material : Combination of MDF with Quartz movement Plate veneer technology work from the home chair 30 Back height Low Back 31 Finish type Natural 32 EAN UPC 33 Warranty service type It's a 12 month Replace or Refund Warranty only for manufacture related issues 34 Domestic warranty 1 year 35 International warranty 1 year 36 Model Series Name TangyOak Alpha 37 Bush Included yes 38 Bend Direction multi directional 39 Seat dimensions 62 by 45 by 10 cm 40 Other dimensions 41 Ergonomic yes 42 Accessories included Hydraulic gas lift