🔍 Click to enlarge
Image of the brand owner
By the manufacturer
The image may differ from the exact product. Always check the specifications for exact size, colour and features.
Topstar Sitness H2 sit-stand balance seat, grey, 3D movable, 570-770 mm
€178,96
incl. VAT
€147,90 excl. VAT (21%)
Price excluding shipping costs: €4,95 incl. VAT for orders under €49,95. From €49,95 we ship for free.
✗ Not in stock
Expected from supplier: week 48 (23 November - 29 November 2026)
Brand: Topstar
| Article number | 77400148 |
|---|---|
| EAN | 4014296741444 |
| OEM number | SH403 CV3 |
| Weight | 6,700 kg |
|---|---|
| Dimensions | B: 800 mm × H: 190 mm × D: 600 mm |
| Country of origin | Duitsland |
| Customs tariff (HS code) | 94013100 |
| VAT rate | 21% |
This is why Dex likes this article
This sitting aid brings movement into your working day: the 3D-movable seat surface encourages your posture during both standing and sitting work. Infinitely adjustable from 570 to 770 mm and suitable for a load capacity of up to 110 kg.
When do you choose this product?
What does a seat riser do and when do you need one?
A seat riser is the ideal solution when your existing office furniture is not at the right height for ergonomic working. This product gives you the flexibility to adjust your seating position quickly and easily without buying a completely new office chair.
Why choose this 3D movable variant?
This Topstar seat riser stands out for its three-dimensional range of motion, so you don't have to stay static in one position. The skateboard-shaped seat rotates fully and encourages small movements while sitting, which contributes to a more active sitting posture throughout the working day.
Practical height adjustment for different users
With the stepless height adjustment from 570 to 770 mm, you can effortlessly adapt the seat riser to your height. The gas spring with black lacquer coating ensures smooth adjustment via the lever under the seat. The polyester surface offers comfort during prolonged use and is easy to keep clean.
Stable base suitable for intensive use
The grey TPU base with a diameter of 350 mm provides sufficient stability, while the load capacity of 110 kg is suitable for most users. Please ensure you have enough legroom, as the seat dimensions are 200 by 450 mm. This seat riser fits under virtually any desk and combines well with your existing workplace setup.
A seat riser is the ideal solution when your existing office furniture is not at the right height for ergonomic working. This product gives you the flexibility to adjust your seating position quickly and easily without buying a completely new office chair.
Why choose this 3D movable variant?
This Topstar seat riser stands out for its three-dimensional range of motion, so you don't have to stay static in one position. The skateboard-shaped seat rotates fully and encourages small movements while sitting, which contributes to a more active sitting posture throughout the working day.
Practical height adjustment for different users
With the stepless height adjustment from 570 to 770 mm, you can effortlessly adapt the seat riser to your height. The gas spring with black lacquer coating ensures smooth adjustment via the lever under the seat. The polyester surface offers comfort during prolonged use and is easy to keep clean.
Stable base suitable for intensive use
The grey TPU base with a diameter of 350 mm provides sufficient stability, while the load capacity of 110 kg is suitable for most users. Please ensure you have enough legroom, as the seat dimensions are 200 by 450 mm. This seat riser fits under virtually any desk and combines well with your existing workplace setup.
Dex finds with this article
Specifications according to the manufacturer
Sitting Stool / Standing Aid "Sitness H2"
Patented sitting/standing aid for dynamic, active sitting and standing
• Upholstery: 100% polyester
• newly developed seating alternative and standing aid for dynamic sitting with a skateboard-style seat, swivelling
• trains the back and helps prevent back problems
• versatile use in the office, workshop, kitchen, household, etc.
• encourages movement at both the sitting and standing workstation
• infinitely adjustable seat height with black-lacquered gas spring
• release lever under the seat
• with patented TPU sole made of thermoplastic material
• like a high-tech sports shoe, the sole adapts optimally to the surface and the incline
• as a result, the stool develops a unique movement behaviour, is extremely dynamic yet very stable and sturdy
• base in black plastic, combined with coloured sole and black plastic applications
• seat width / depth: 200 / 450 mm
• seat height: 570 - 770 mm
• footplate diameter: 350 mm
• other colours available on request!
Recommended sitting time: max. 4 hours
- Recommended for short sitting periods
- simple seating comfort
- Application area: Home Office
- EN 1335 1-3 and GS-certified
Patented sitting/standing aid for dynamic, active sitting and standing
• Upholstery: 100% polyester
• newly developed seating alternative and standing aid for dynamic sitting with a skateboard-style seat, swivelling
• trains the back and helps prevent back problems
• versatile use in the office, workshop, kitchen, household, etc.
• encourages movement at both the sitting and standing workstation
• infinitely adjustable seat height with black-lacquered gas spring
• release lever under the seat
• with patented TPU sole made of thermoplastic material
• like a high-tech sports shoe, the sole adapts optimally to the surface and the incline
• as a result, the stool develops a unique movement behaviour, is extremely dynamic yet very stable and sturdy
• base in black plastic, combined with coloured sole and black plastic applications
• seat width / depth: 200 / 450 mm
• seat height: 570 - 770 mm
• footplate diameter: 350 mm
• other colours available on request!
Recommended sitting time: max. 4 hours
- Recommended for short sitting periods
- simple seating comfort
- Application area: Home Office
- EN 1335 1-3 and GS-certified
Specifications
Seat upholstery
Fabric
Seat colour
grey marl
Load capacity
110 kg
Manufacturer
Hazard information
No hazard classification applies according to the available manufacturer and supplier information.
This product contains no substances classified as hazardous under the CLP Regulation.
This product contains no substances classified as hazardous under the CLP Regulation.
Product information checked by XtremeOffice
This page has been compiled based on information from the manufacturer and our supplier. Last checked on 31-10-2026.
This page has been compiled based on information from the manufacturer and our supplier. Last checked on 31-10-2026.
Alternative versions
This product is also available in other versions:
| Image | Product | Price | Stock | Order |
|---|---|---|---|---|
|
€147,90
€178,96 incl.
|
● Not in stock | ||
|
€147,90
€178,96 incl.
|
● Not in stock | ||
|
€147,90
€178,96 incl.
|
● Not in stock |
×
‹
›
![]()