# Office chair Topstar CHEFSESSEL SITNESS DIRECTOR 10 (SK739T A80) — ergonomic manager chair

**URL:** https://aio.lv/en/product--topstar-sk739t-a80--1636751
**Data updated:** 2026-02-12 09:43 (EET)
**Category:** Ergonomic Chairs
**Manufacturer:** Topstar
**Manufacturer code:** SK739T A80
**EAN:** 4014296273808
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 497.99 €
**Prices and availability valid until:** 2026-07-18 23:59
**Price without VAT (21%):** 411.56 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--topstar-sk739t-a80--1636751

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 22.07.2026 | free |
| Courier delivery to door | 27.07.2026 | 53.99 EUR |

## Summary description

Topstar CHEFSESSEL SITNESS DIRECTOR 10 (SK739T A80) is an office/manager chair designed for daily professional use. It features the brand’s SITNESS mechanism for active sitting and back support, adjustable components for individual comfort, and a high back suitable for extended work sessions. Ideal for offices and home workplaces that require ergonomic seating and improved posture.

## Long description

Topstar CHEFSESSEL SITNESS DIRECTOR 10 is an ergonomic manager chair designed for daily professional use. The chair combines a high backrest with the brand’s SITNESS mechanism to promote active sitting and continuous micro-movements that support the spine. Adjustable features allow users to adapt the chair to their body shape and working habits, making it suitable for long work sessions in offices or home workplaces.
Advantages
The SITNESS mechanism enables dynamic sitting by allowing controlled, multi-directional movements of the seat and backrest, which helps reduce static muscle load. An adjustable backrest height and tilt, combined with customizable armrests and seat depth, provide personalized ergonomics. The high back design supports the upper back and shoulders, while the robust construction ensures stability for daily use.
Suitable for
Office managers and executives who sit for extended periods
Home office users seeking ergonomic seating for long workdays
Workstations requiring a supportive high-back chair with active-sitting features
Key specifications
Ergonomic mechanism: SITNESS active-sitting system for dynamic support
Backrest type: high backrest for upper back and shoulder support
Adjustability: backrest tilt and height adjustment; seat depth adjustment
Armrests: adjustable for height and/or angle to reduce shoulder strain
Base and casters: sturdy five-point base with smooth-rolling castors suitable for office floors
Upholstery options: durable fabric or material designed for frequent use
How to use
Adjust the seat height so your feet rest flat on the floor and knees are at approximately a 90° angle. Set the seat depth so there is a small gap between the front of the seat and the back of your knees. Use the backrest height and tilt adjustments to position lumbar and upper back support where it feels most effective. Modify the armrest height and angle so your forearms are supported with relaxed shoulders. Allow the SITNESS mechanism to move naturally during work to maintain micro-movements that reduce static load.
Usage recommendations
For best ergonomic effect, combine correct chair adjustments with regular short breaks and posture changes. If using on a hard floor, consider suitable casters or a chair mat to protect the floor and ensure smooth mobility.

## FAQ

### How much does the Topstar CHEFSESSEL SITNESS DIRECTOR 10 (SK739T A80) chair cost, and is it available for purchase?

The price is 497.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 11 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 22.07.2026 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/1636751/47514455_large.webp