# Office chair Topstar SI59UG20 — ergonomic adjustable height, swivel seat, caster base

**URL:** https://aio.lv/en/product--topstar-si59ug20--3692947
**Data updated:** 2025-12-29 13:44 (EET)
**Category:** Office Chairs & Armchairs
**Manufacturer:** Topstar
**Manufacturer code:** SI59UG20
**EAN:** 4014296541280
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 253.99 €
**Prices and availability valid until:** 2026-07-24 23:59
**Price without VAT (21%):** 209.91 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--topstar-si59ug20--3692947

## 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 | 15.49 EUR |

## Summary description

Topstar SI59UG20 is an ergonomic office chair with adjustable height, swivel seat and caster base for easy mobility. Designed for everyday desk work, it supports posture and allows quick position changes. Suitable for home or office use, it provides practical comfort, height adaptability and smooth movement on most floor types.

## Long description

Topstar SI59UG20 is an ergonomic office chair with an orthopaedic seat (Sitness 25, 40 mm / 10"), black fabric cover made of 100% polyolefin, adjustable seat height and integrated lumbar support. The chair includes U2-type armrests, a steel five-star base with casters and a permanent contact mechanism that supports upright posture. Dimensions (W x D x H): 480 x 440 x 420–550 mm, backrest height: 580 mm; maximum load capacity: 110 kg.
Advantages
The chair combines an ergonomic orthositz seat with height adjustment and lumbar support to improve sitting posture during prolonged desk work. The permanent contact mechanism keeps the backrest engaged with the sitter for continuous support while the steel base and casters provide stable mobility. Fabric cover of polyolefin is durable and easy to maintain.
Suitable for
 Home office and study desks
 Standard office workplaces
 Rooms requiring a compact, adjustable swivel chair
Key specifications
 Model: Topstar SI59UG20 (SI59U G20)
 Seat type: ergonomic Orthositz, Sitness 25/40 mm (10")
 Upholstery: black fabric, 100% polyolefin
 Armrests: U2 type (included)
 Mechanism: permanent contact
 Base: steel five-star with casters
 Seat height: 420–550 mm
 Overall dimensions (W x D x H): 480 x 440 x 420–550 mm
 Backrest height: 580 mm
 Maximum load: 110 kg
 Brand / MPN / EAN: Topstar / SI59UG20 / 4014296541280
How to use
Adjust the seat height using the gas lift lever to position your thighs parallel to the floor and your feet flat. Use the permanent contact mechanism to set the backrest angle that maintains contact with your back while allowing slight recline. Position the U2 armrests so your shoulders remain relaxed and forearms rest comfortably while typing. Use the casters to move smoothly between work areas on suitable floor surfaces.
Usage recommendations
For prolonged daily use, combine correct seating height and lumbar adjustment with regular short breaks and occasional posture changes to reduce fatigue. Check floor type compatibility for the chair casters; use a mat on delicate floors if needed.

## FAQ

### How much does the Office chair Topstar SI59UG20 cost, and is it available for purchase?

The price is 253.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 17 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/3692947/47530706_large.webp