TOPSTAR RS90F AD0 sedia direzionale, tessuto nero, base in alluminio lucidato, meccanismo sincronizzato, braccioli Loop

Where most executive chairs rely on bulky padding and fixed postures, the TOPSTAR RS90F AD0 takes a leaner, more dynamic route. Its synchronous mechanism keeps seat and backrest moving in a natural ratio, so your body stays supported whether you lean forward to type or recline to think. Individual weight adjustment means the chair responds to your build, not the other way around.

Highlights

• Synchronous mechanism with multi-position lock and individual weight adjustment
• Stepless seat height adjustment via Toplift gas spring (430–510 mm)
• Fixed loop armrests for stable forearm support
• Polished aluminum base with brake-controlled double safety castors for carpet
• Durable 100% polypropylene fabric cover in black
• GS-certified by TÜV Rheinland for safety and quality

In daily use

From the first sit-down, the RS90F AD0 feels balanced rather than plush. The synchronous mechanism lets you move without hunting for levers, and the weight adjustment dials out the bounce you get on generic office chairs. The seat is 480 mm wide and deep, giving enough room to shift position through an eight-hour day. Loop armrests keep your elbows close without forcing a narrow posture, and the polished aluminum base adds a crisp, professional edge that holds up in meeting rooms and home offices alike.

Full specifications

• Chair type: Executive office chair
• Mechanism: Synchronous, lockable in multiple positions, individual weight adjustment
• Seat height adjustment: Stepless with Toplift gas spring
• Seat height range: 430–510 mm
• Seat dimensions (W x D): 480 x 480 mm
• Backrest height: 720 mm
• Armrests: Fixed loop armrests
• Base material: Polished aluminum
• Castors: Double safety castors for carpeted floors, brake-controlled
• Cover material: 100% polypropylene fabric
• Colour: Black
• Maximum user weight: 110 kg
• Maximum user height: 192 cm
• Recommended daily usage: Up to 8 hours
• Certifications: GS-certified (TÜV Rheinland)
• Overall height (min–max): 1150–1250 mm
• Overall width: 600 mm
• Overall depth: 650 mm
• Assembly: Self-assembly required

Final note

The RS90F AD0 is a straightforward, well-built executive chair for users who want reliable ergonomics and a clean look without overcomplication. The polished base and black fabric keep it versatile across modern office interiors.