TOPSTAR executive chair Profi Chief. Backrest depth adjustable: No. Armrests: Included. Adjustable backrest: Height. Backrest height adjustable: Yes. Mass balance system: No. Number of wheels: 5. Chair type: Executive chair. Recommended use: 8 hours/day. Fire retardant: No. Glides: No. Adjustable armrests: Yes. Weight capacity: 130 kg. Lockable armrests: Yes. Tilt lock system: Yes. Material: Polyester. Dispenser material: Polyester. Mechanism type: Synchronous tilt mechanism. Permanent contact: No. Real leather: No. Adjustable seat angle: Yes. Adjustable seat depth: Yes. Adjustable seat depth: Depth. Seat height adjustable: Yes. Self-assembly: Yes. Lumbar support: No. Stackable: No. Synchronous tilt mechanism: Yes. Stepless reclinable backrest: Yes. Base type: Star, metal. Seat depth: 480 mm. Backrest height: 680 mm. Seat depth: 480 mm. Seat height adjustable (max): 510 mm. Seat height adjustable (min): 420 mm. Seat width: 520 mm. Dimensions: 1200 x 520 x 480 mm (h x w x d). Colour: black.