Niceday Office Chair Ness. Recommended Use: 5 Hour/Day. Armrest: No. Adjustable Armrest: No. Number of Castors: 5. Chair Type: Office Chair. Adjustable Backrest Depth: No. Frame Colour: Black. Seat Angle Adjustment: No. Material: Mesh, Fabric. Permanent Contact: No. Back Height Adjustment: No. Stackable: No. Synchro Tilt: No. Tilt Tension: Yes. Seat Height Adjustment: Yes. Type of Mechanism: Basic Tilt. Type of Feet: Starbase, Metal. Lockable Armrest: No. Lockable Tilt Mechanism: No. Self Assembly: Yes. Fire Retardent: Yes. Width Backrest: 459 mm. Seat Width: 449 mm. Height Back Rest: 533 mm. Seat Height Adjustment: 389 mm. Seat Height Adjustment (Max): 481 mm. Seat Depth: 448 mm. Material of Cover: Mesh. Real Leather: No. Lumbar Support: No. Dimensions: 560 x 655 mm (w x d). Colour: Green, Black.