# Sitting stool Topstar Sitness 40 ST290W50 with backrest, black cover

**URL:** https://aio.lv/en/product--topstar-st290w50--4440639
**Data updated:** 2026-04-03 16:14 (EEST)
**Category:** Office Chairs & Armchairs
**Manufacturer:** Topstar
**Manufacturer code:** ST290W50
**EAN:** 4014296068596
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 284.99 €
**Prices and availability valid until:** 2026-07-24 23:59
**Price without VAT (21%):** 235.53 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--topstar-st290w50--4440639

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 23.07.2026 | free |
| Courier delivery to door | 28.07.2026 | 4.99 EUR |

## Summary description

Topstar Sitness 40 ST290W50 is a sitting stool with a backrest and black cover designed for active sitting. The stool supports dynamic posture adjustments, promotes core engagement and can be used at home, in the office or at a counter. Its compact form is suitable for short-term seating, meetings or work tasks where mobility and posture variation are needed.

## Long description

The Topstar Sitness 40 ST290W50 with backrest and black cover is a compact sitting stool engineered for active sitting. Designed to encourage dynamic posture changes and core muscle engagement, this swivel stool suits short-term seating, meetings and tasks that require mobility and quick position shifts. Its small footprint and integrated back support offer a balance between freedom of movement and light lumbar assistance, making it appropriate for home offices, reception areas and counters.
Advantages
The Sitness 40 combines a flexible seat mechanism with a stable base to promote micro-movements while seated, helping to reduce static tension in the lower back. The integrated backrest provides additional support without restricting mobility, and the black cover gives a neutral, professional appearance that integrates into a variety of interiors. The stool is easy to move around thanks to its swivel function and compact design.
Suitable for
 Short-term sitting in home offices and shared workspaces
 Meetings, standing desk alternation and quick task changes
 Reception areas, counters and collaborative zones
 Users seeking increased core activation and posture variation
Key specifications
 Type: Swivel sitting stool with backrest
 Seating concept: Active/sitness seating that allows dynamic movement
 Upholstery: Black fabric or cover finish
 Support: Integrated low back support for light lumbar assistance
 Mobility: 360° swivel for easy orientation changes
 Design: Compact footprint suitable for small spaces and counters
How to use
Adjust the stool into an upright position and place it close enough to your workspace to allow relaxed arm positioning. Sit with your feet flat on the floor and use the swivel to change orientation instead of twisting the torso. Allow natural micro-movements by leaning slightly forward, backward or to the sides as comfort requires; the seat mechanism supports this dynamic activity. Use the backrest for light lumbar support when needed, and stand up regularly to alternate load and promote circulation.
Usage recommendations
For best results, alternate between the Sitness 40 and a conventional ergonomic chair during long work sessions. Maintain an active posture, take regular short breaks to walk or stretch, and position the stool so your forearms rest comfortably on the work surface to reduce shoulder strain.

## FAQ

### How much does the Sitting stool Topstar Sitness 40 ST290W50 cost, and is it available for purchase?

The price is 284.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 2 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 23.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Topstar products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Topstar service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/4440639/59841688_large.webp