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Topstar Sitness 10 office chair, black, ergonomic, lumbar support
€197,84
incl. VAT
€163,50 excl. VAT (21%)
Price excluding shipping costs: €4,95 incl. VAT for orders under €49,95. From €49,95 we ship for free.
33%
goedkoper
than the average price on Google Shopping Average price of other shops offering this same item, gemeten op 01-10-2026
✓ In stock (5 pieces)
Ordered now, delivered Wednesday
Need more? New stock expected in week 48 (23 November - 29 November 2026).
Place your order and we'll make sure it's delivered on time.
Place your order and we'll make sure it's delivered on time.
Brand: Topstar
| Article number | 77400025 |
|---|---|
| EAN | 4014296541280 |
| OEM number | SI59U G20 |
| Weight | 19,000 kg |
|---|---|
| Dimensions | B: 775 mm × H: 310 mm × D: 592 mm |
| Country of origin | EU |
| Customs tariff (HS code) | 94013100 |
| VAT rate | 21% |
This is why Dex likes this article
This office chair supports your back exactly where needed, thanks to the lumbar support and the sturdy steel base. With adjustable seat height and a load capacity of 110 kg, you can sit comfortably at your desk for hours.
When do you choose this product?
What does an ergonomic office chair do for you?
An ergonomic office chair such as the Topstar Sitness 10 supports your body during long working days at your desk. With the built-in lumbar support, you receive targeted support for your lower back, which helps to prevent back complaints. The permanent contact mechanism ensures that the backrest always stays in contact with your back, regardless of your sitting posture.
Why choose this compact size?
With seat dimensions of 480 x 440 mm, this chair is ideal for workspaces where space is limited. The seat height is adjustable between 420 and 550 mm, so you can adjust the chair precisely to your desk and body height. The steel base provides a sturdy foundation without taking up much floor space.
How does the orthopaedic seat work?
The ergonomic orthopaedic seat is specially designed to keep your pelvis and spine in the correct position. Combined with the lumbar support, this creates a natural S-curve in your back. The 100% polypropylene upholstery is dimensionally stable and retains its ergonomic properties even after prolonged use.
Practical considerations when using the chair
This chair has a maximum load capacity of 110 kg and is supplied with standard castors for carpeted floors. For hard floors, you can optionally order hard-floor castors (article number 70699950). The included U2 armrests provide extra arm support while you work.
An ergonomic office chair such as the Topstar Sitness 10 supports your body during long working days at your desk. With the built-in lumbar support, you receive targeted support for your lower back, which helps to prevent back complaints. The permanent contact mechanism ensures that the backrest always stays in contact with your back, regardless of your sitting posture.
Why choose this compact size?
With seat dimensions of 480 x 440 mm, this chair is ideal for workspaces where space is limited. The seat height is adjustable between 420 and 550 mm, so you can adjust the chair precisely to your desk and body height. The steel base provides a sturdy foundation without taking up much floor space.
How does the orthopaedic seat work?
The ergonomic orthopaedic seat is specially designed to keep your pelvis and spine in the correct position. Combined with the lumbar support, this creates a natural S-curve in your back. The 100% polypropylene upholstery is dimensionally stable and retains its ergonomic properties even after prolonged use.
Practical considerations when using the chair
This chair has a maximum load capacity of 110 kg and is supplied with standard castors for carpeted floors. For hard floors, you can optionally order hard-floor castors (article number 70699950). The included U2 armrests provide extra arm support while you work.
Specifications according to the manufacturer
Office chair "Sitness 10"
• Upholstery: 100% polypropylene
• Office chair with ergonomic orthopaedic seat
• Infinitely adjustable seat height with top lift
• Moulded backrest, adjustable in height and angle, with integrated lumbar support
• Permanent contact mechanism for adjusting the backrest angle
• US-patented fitness orthopaedic seat with Body-Balance-Tec joint (three-dimensionally movable)
• Attractive and stable chromed steel five-star base
• Load-dependent braked safety double castors for carpeted floors
• Backrest height: 580 mm
• Seat dimensions: (W)480 x (D)440 x (H)420 - 550 mm
• Armrests type U2 included, height adjustable
• Other colours available on request!
Note: Products listed as accessories are not part of the chair and are not included in the scope of delivery!
Seating recommendation: unlimited use
- Recommended for intensive use in a business/private environment
- Use without restrictions
- High seating comfort
- Extensive ergonomic equipment
- EN 1335 1-3 and GS-certified
• Upholstery: 100% polypropylene
• Office chair with ergonomic orthopaedic seat
• Infinitely adjustable seat height with top lift
• Moulded backrest, adjustable in height and angle, with integrated lumbar support
• Permanent contact mechanism for adjusting the backrest angle
• US-patented fitness orthopaedic seat with Body-Balance-Tec joint (three-dimensionally movable)
• Attractive and stable chromed steel five-star base
• Load-dependent braked safety double castors for carpeted floors
• Backrest height: 580 mm
• Seat dimensions: (W)480 x (D)440 x (H)420 - 550 mm
• Armrests type U2 included, height adjustable
• Other colours available on request!
Note: Products listed as accessories are not part of the chair and are not included in the scope of delivery!
Seating recommendation: unlimited use
- Recommended for intensive use in a business/private environment
- Use without restrictions
- High seating comfort
- Extensive ergonomic equipment
- EN 1335 1-3 and GS-certified
Specifications
Version
with armrests
Seat upholstery
Polypropylene
Seat colour
black
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.
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