🔍 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 office chair Sitness Airwork, mint green, synchro mechanism, mesh backrest
€405,47
incl. VAT
€335,10 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 | 77240425 |
|---|---|
| EAN | 4014296941295 |
| OEM number | PA30O MT5CX5 |
| Weight | 17,600 kg |
|---|---|
| Dimensions | B: 800 mm × H: 480 mm × D: 600 mm |
| Country of origin | Duitsland |
| Customs tariff (HS code) | 94013900 |
| VAT rate | 21% |
This is why Dex likes this article
This mint-green office chair offers dynamic sitting thanks to the movable seat, which continuously improves your posture. The adjustable backrest with lumbar support provides optimal support during long working days.
When do you choose this product?
When should you choose an ergonomic office chair?
An ergonomic office chair is essential when you work at a desk for several hours a day. The Sitness Airwork supports your posture and helps prevent back complaints by keeping your body in a natural position. The synchro mechanism ensures that the backrest and seat move together, so you can lean back comfortably without your feet coming off the floor.
Why choose a mesh backrest?
The mesh backrest of this chair provides optimal ventilation during long working days, keeping your back cool and dry. The backrest has a height of 575 mm and features a height-adjustable lumbar support that provides support exactly where you need it in your lower back. This prevents you from slouching and keeps your spine in its natural S-shape.
Flexible seat for active sitting
What sets this chair apart is the three-dimensionally flexible flat seat, which tilts and moves with your body. This special feature encourages small movements while you sit, keeping your muscles active and promoting blood circulation. The seat height is adjustable between 450 and 570 mm, and it adapts with dimensions of 455 x 410-475 mm.
Practical considerations for your workspace
This office chair has a maximum load capacity of 110 kg and comes standard with armrests and soft floor castors. Do you work on a hard floor such as laminate or parquet? Then you can optionally order hard floor castors (article number 70699952) for better rolling performance and protection for your floor.
An ergonomic office chair is essential when you work at a desk for several hours a day. The Sitness Airwork supports your posture and helps prevent back complaints by keeping your body in a natural position. The synchro mechanism ensures that the backrest and seat move together, so you can lean back comfortably without your feet coming off the floor.
Why choose a mesh backrest?
The mesh backrest of this chair provides optimal ventilation during long working days, keeping your back cool and dry. The backrest has a height of 575 mm and features a height-adjustable lumbar support that provides support exactly where you need it in your lower back. This prevents you from slouching and keeps your spine in its natural S-shape.
Flexible seat for active sitting
What sets this chair apart is the three-dimensionally flexible flat seat, which tilts and moves with your body. This special feature encourages small movements while you sit, keeping your muscles active and promoting blood circulation. The seat height is adjustable between 450 and 570 mm, and it adapts with dimensions of 455 x 410-475 mm.
Practical considerations for your workspace
This office chair has a maximum load capacity of 110 kg and comes standard with armrests and soft floor castors. Do you work on a hard floor such as laminate or parquet? Then you can optionally order hard floor castors (article number 70699952) for better rolling performance and protection for your floor.
Specifications according to the manufacturer
Upholstery: 100% polyester, infinitely adjustable seat height, mesh backrest with height-adjustable lumbar support, synchro mechanism, three-dimensionally movable special flat seat, black plastic five-star base, incl. armrests (PA30O MT5CX5)
Seat dimensions: (W)455 x (D)410 - 475 x (H)450 - 570 mm
Backrest height: 575 mm, Load capacity: 110 kg
optional hard floor castors: 70699952
Seat dimensions: (W)455 x (D)410 - 475 x (H)450 - 570 mm
Backrest height: 575 mm, Load capacity: 110 kg
optional hard floor castors: 70699952
Specifications
Version
with armrests
Seat upholstery
Polyester
Seat colour
mint
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 30-10-2026.
This page has been compiled based on information from the manufacturer and our supplier. Last checked on 30-10-2026.
Related items
This product is also available in other versions and has matching accessories:
| Image | Product | Price | Stock | Order |
|---|---|---|---|---|
|
€16,68
€20,18 incl.
|
● In stock (11) | |||
![]() |
€335,10
€405,47 incl.
|
● Not in stock | ||
![]() |
€335,10
€405,47 incl.
|
● Not in stock | ||
![]() |
€335,10
€405,47 incl.
|
● Not in stock |
×
‹
›