TOPSTAR Sitness 55 bureaustoel met wielen SD69XT20 zwart

For professionals who spend long hours at a desk, the TOPSTAR Sitness 55 SD69XT20 offers a dynamic seating solution with its Body-Balance-Tec joint, promoting active sitting and micro-movements throughout the day. The black polyester upholstery and polished aluminium base give it a sleek, modern look suitable for contemporary offices.

Key specifications

• Point-synchronous mechanism with individual weight adjustment
• Height-adjustable backrest via raster mechanism
• Height-adjustable T-armrests
• Polished aluminium base with double safety casters for carpeted floors
• Seat height adjustment range: 42 - 55 cm
• Seat dimensions: 48 cm width, 48 cm depth
• Backrest dimensions: 58 cm height, 48 cm width
• Maximum user weight: 110 kg
• Recommended for up to 8 hours daily use
• GS-certified (TÜV Rheinland)

Why choose it

The Sitness 55 encourages active sitting, which can help reduce the strain of prolonged static postures. Its synchronous mechanism supports natural movement, while the adjustable backrest and armrests allow for personalised ergonomic comfort.

Ideal use cases

• Office workstations requiring ergonomic seating
• Home offices with carpeted flooring
• Users seeking a chair that supports dynamic sitting

Good to know

The chair is suitable for carpeted floors and features brake-controlled double safety casters. It is GS-certified for tested safety.