Topstar Sitness 20 Stool

1. Introduction

Thank you for choosing the Topstar Sitness 20 Stool. This instruction manual provides essential information for the safe assembly, operation, and maintenance of your new stool. Please read this manual thoroughly before use and retain it for future reference.

Figure 1: Topstar Sitness 20 Stool, Red variant. This image shows the complete assembled stool from a front-side perspective.

2. Safety Information

WARNING: This stool is designed to hold up to 120 kilograms. Ensure proper assembly and do not exceed the weight limit to prevent tipping and potential injury.

• Always ensure all components are securely fastened before use.
• Do not stand on the stool.
• Keep children away from the stool during assembly.
• Use the stool on a flat, stable surface.

3. Package Contents

Please check that all parts are present before beginning assembly. If any parts are missing or damaged, contact customer support.

• Seat cushion assembly
• Gas lift cylinder
• Base with air cushion
• Instruction Manual

4. Setup and Assembly

Assembly is required for this product. Follow these steps carefully:

1. Unpack all components and place them on a clean, soft surface to prevent scratches.
2. Insert the gas lift cylinder into the central opening of the base. Ensure it is seated firmly.
3. Place the seat cushion assembly onto the top of the gas lift cylinder. Apply gentle downward pressure until it is securely connected.
4. Test the stability of the stool by gently sitting on it and checking for any wobbling.

Figure 2: Front view of the Topstar Sitness 20 Stool. This image provides a general overview of the stool's structure, useful for visual assembly reference.

5. Operating Instructions

5.1. Height Adjustment

The stool features stepless height adjustment using a Toplift mechanism. To adjust the height:

• To raise the seat: Stand up and pull the ring release lever located under the seat upwards. The seat will rise automatically. Release the lever at the desired height.
• To lower the seat: Sit on the stool and pull the ring release lever upwards. The seat will lower. Release the lever at the desired height.

Figure 3: Stool dimensions and height adjustment range (44-54 cm). This image illustrates the adjustable height and overall dimensions of the stool, including the base diameter of 39 cm and seat diameter of 41 cm.

5.2. Sitness Technology

The Sitness 20 Stool incorporates unique Sitness technology, designed to promote active sitting and strengthen back muscles. This technology provides:

• Vertical Swing Effect: Achieved through a special spring suspension.
• Horizontal Swing Effect: Individually adjustable via pressure regulation in the air cushion foundation.

The dynamic movement encourages constant micro-movements, which can help train your back and spinal column, relieve intervertebral discs, stimulate blood circulation, and improve concentration.

Figure 4: Close-up of the stool's base and seat mechanism. This image highlights the polished aluminum footplate with a black rubber tire and the connection to the seat, demonstrating the Sitness technology components.

Figure 5: Diagram illustrating the benefits of Sitness technology. This image shows how the technology supports back and spine training, relieves intervertebral discs, ensures freedom of movement, stimulates blood circulation, and enhances concentration.

6. Maintenance

To ensure the longevity and appearance of your Topstar Sitness 20 Stool:

• Cleaning: Wipe with a dry cloth. Avoid abrasive cleaners or harsh chemicals.
• Inspection: Periodically check all screws and connections to ensure they are tight. Retighten if necessary.
• Air Cushion: If the horizontal swing effect feels reduced, the air cushion in the base may need to be re-inflated. A standard bicycle pump can be used for this purpose.

7. Troubleshooting

• Stool wobbles: Ensure all assembly connections are tight. Check that the stool is on a flat, even surface.
• Height adjustment not working: Verify that the gas lift cylinder is correctly inserted into both the base and the seat mechanism. If the issue persists, the gas lift may need replacement.
• Reduced swing motion: Check the air pressure in the base's air cushion. Re-inflate if needed using a bicycle pump.

8. Specifications

• Model Number: SI69G21
• Product Dimensions (D x W x H): 16.14" x 16.14" x 21.26" (41 cm x 41 cm x 54 cm)
• Seat Height Range: 44 - 54 cm
• Item Weight: 8 Kilograms
• Maximum Weight Recommendation: 100 Kilograms (Note: Product warning states 120 kg, refer to warning for safety)
• Frame Material: Metal
• Seat Material: Fabric, Aluminum
• Color: Red (as per current product variant)
• Manufacturer: Topstar
• Assembly: Required

9. Warranty and Support

The Topstar Sitness 20 Stool comes with a 3-year warranty, ensuring quality and reliability.

Figure 6: Labels indicating 'Made in Germany' and '3 Jahre Garantie' (3 Year Warranty). This image confirms the product's origin and warranty period.

For technical support, warranty claims, or to order replacement parts, please contact Topstar customer service through their official website or the retailer where the product was purchased. Please have your model number (SI69G21) and proof of purchase ready.