TOPSTAR Sitness H1 zit-sta-kruk, grijs

Unlike conventional office chairs that lock you into one posture, the TOPSTAR Sitness H1 keeps your body in motion throughout the workday. Its 3D flexible seat joint tilts in every direction, activating your core and back muscles while you sit. The result is a dynamic sitting experience that relieves tension and boosts concentration—perfect for anyone who spends hours at a desk.

Highlights

• 3D flexible seat joint for omnidirectional movement
• Gas spring height adjustment from 580 to 830 mm
• Ergonomic round seat with durable fabric cover
• Stable ring base with floor glides for smooth repositioning
• GS-tested by TÜV Rheinland for safety and quality
• Supports dynamic sitting and standing transitions

In daily use

The Sitness H1 encourages micro-movements that keep your spine aligned and your legs active. Adjust the height in seconds to alternate between sitting and standing at a height-adjustable desk. The non-slip base ensures stability, while the compact footprint fits easily under most desks. Ideal for home offices, studios, and collaborative workspaces.

Full specifications

• Brand: TOPSTAR
• Model: SH303 CV3
• MPN: SH303 CV3
• EAN: 4014296747224
• Product type: Sit-stand stool
• Colour: Grey
• Seat material: Fabric (100% polypropylene)
• Base material: Polyamide
• Base type: Ring base with floor glides
• Height adjustment mechanism: Gas spring
• Minimum seat height: 580 mm
• Maximum seat height: 830 mm
• Seat diameter: 380 mm
• Base diameter: 450 mm
• Maximum user weight: 110 kg
• Certifications: GS-tested (TÜV Rheinland)
• Recommended daily usage: Up to 4 hours
• Assembly: Self-assembly required
• Special feature: Promotes dynamic sitting and standing
• Brand series: Sitness

Final note

Make every workday healthier—choose the TOPSTAR Sitness H1 for active sitting that adapts to your body, not the other way around.