TOPSTAR Sitness 40 Active Sitting Stool Black (ST290D10)

The TOPSTAR Sitness 40 is an innovative active sitting stool designed to promote dynamic sitting and strengthen your back muscles. Its patented Sitness Joint allows 3D movement, encouraging constant micro-movements that improve posture and circulation. Ideal for office, home, or educational environments, this stool combines ergonomic benefits with robust construction.

Advantages

Active sitting stool with patented Sitness Joint for 3D movement; promotes active sitting and strengthens back muscles; GS-tested for safety and quality; stepless gas spring height adjustment from 420 mm to 560 mm; comfortable fabric seat (100% polyester) with a diameter of 400 mm; stable polyamide ring base with 400 mm diameter; supports users up to 110 kg.

Suitable for

• Office workstations
• Home offices
• Educational settings (classrooms, labs)
• Reception areas
• Any environment where prolonged sitting occurs

Key specifications

• Product Type: Active Sitting Stool
• Series: Sitness 40
• Colour: Black
• Seat Material: Fabric (100% Polyester)
• Base Type: Ring Base
• Base Material: Polyamide
• Height Adjustment: Stepless Gas Spring
• Minimum Seat Height: 420 mm
• Maximum Seat Height: 560 mm
• Seat Diameter: 400 mm
• Base Diameter: 400 mm
• Maximum User Weight: 110 kg
• Special Features: Patented Sitness Joint for 3D Movement, Promotes Active Sitting, Strengthens Back Muscles
• Certification: GS-tested (LGA Nuremberg)

Recommendations

For optimal results, combine the Sitness 40 with a height-adjustable desk. Regular use can help alleviate back pain and improve overall well-being. Ensure the stool is placed on a non-slip surface for stability.