# Office chair Topstar Sitness 15 ST19UG03 purple ergonomic design

**URL:** https://aio.lv/en/product--topstar-st19ug03--3697936
**Data updated:** 2025-12-29 13:45 (EET)
**Category:** Ergonomic Chairs
**Manufacturer:** Topstar
**Manufacturer code:** ST19UG03
**EAN:** 4014296111568
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 256.49 €
**Prices and availability valid until:** 2026-07-12 23:59
**Price without VAT (21%):** 211.98 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--topstar-st19ug03--3697936

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 15.07.2026 | free |
| Courier delivery to door | 20.07.2026 | 5.06 EUR |

## Summary description

Topstar Sitness 15 ST19UG03 is an ergonomic office chair in purple designed for everyday desk use. It features the Sitness concept that promotes dynamic sitting and supports posture, making it suitable for home or office workspaces. The chair offers adjustable elements for comfort during long working hours and a stable base for reliable seating.

## Long description

Topstar Sitness 15 ST19UG03 is an ergonomic office chair in purple designed for everyday desk work at home or in the office. The chair integrates the Sitness concept to encourage dynamic sitting and support an upright posture. It provides adjustable elements and a stable base for reliable seating during extended use.
Advantages
The Sitness mechanism promotes micro-movements while seated to reduce static strain on the back. Height adjustment and a contoured seat offer personalized comfort. A robust five-star base and smooth casters ensure stability and easy repositioning on typical office floors.
Suitable for
 Home office workstations
 Office desk jobs with extended sitting periods
 Study areas and student workspaces
Key specifications
 Brand: Topstar
 Model / MPN: ST19UG03
 EAN: 4014296111568
 Design: Ergonomic office chair with Sitness mechanism
 Color: Purple (violet)
How to use
Adjust the seat height so your feet rest flat on the floor and knees are approximately at a right angle. Sit with your back against the backrest and allow the Sitness mechanism to enable gentle micro-movements. Use the height adjustment to set a comfortable working position and reposition the chair using the casters when needed.
Usage recommendations
For best results, combine regular posture changes with short standing or walking breaks every 30–60 minutes. Check floor compatibility for the casters and consider a chair mat on delicate surfaces.

## FAQ

### How much does the Office chair Topstar Sitness 15 ST19UG03 cost, and is it available for purchase?

The price is 256.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 42 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 15.07.2026 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/3697936/47522280_large.webp