# Office chair SUNFLEX HB Onyx Black, ergonomic high-back model, brand SUNFLEX

**URL:** https://aio.lv/en/product--sunflex-250505--12023075
**Data updated:** 2026-03-11 20:58 (EET)
**Category:** Office Chairs & Armchairs
**Manufacturer:** SUNFLEX
**Manufacturer code:** 250505
**EAN:** 7350042902743
**Warranty:** 2 Years
**Availability:** Out of stock

## Summary description

SUNFLEX Office chair HB Onyx Black is a high-back office chair designed for desk use. It features an ergonomic high-back form that supports posture during prolonged sitting. Suitable for home office and corporate environments, it serves general office tasks, meetings and workstation use. Compatible with standard office chair bases and adjustable mechanisms where provided by the manufacturer.

## Long description

The SUNFLEX HB Onyx Black office chair is an ergonomic high-back model designed for desk-based work. Its tall backrest supports the upper and lower spine to promote better posture during prolonged sitting. The chair is intended for general office tasks, meetings and workstation use in home or corporate environments and is compatible with standard office chair bases and adjustable mechanisms provided by the manufacturer.
Advantages
The high-back design offers extended lumbar and shoulder support while the contoured seat distributes weight evenly to reduce pressure points. The chair's ergonomic shape helps maintain a neutral spine alignment and minimizes muscle strain during long periods of sitting. Built for everyday office use, the model balances support and mobility suitable for varied work activities.
Suitable for
Office desk work and computer tasks
Home office and remote workstations
Meetings and conference rooms
General administrative and clerical duties
Key specifications
Type: Ergonomic high-back office chair
Backrest: High-back profile supporting upper and lower back
Intended use: Desk and workstation seating for extended sitting
Compatibility: Fits standard office chair bases and adjustable mechanisms
Color: Onyx Black finish
How to use
Adjust the seat height so your feet rest flat on the floor and your knees are roughly at a 90° angle. Position the backrest to support the natural curve of your lower back; if the chair includes adjustable lumbar or tilt features, fine-tune them to maintain a neutral spine. Keep the seat depth and arm height aligned with your desk to allow relaxed shoulders and forearms while typing or using a mouse. For prolonged sessions, stand and move periodically to reduce static loading on the spine.
Usage recommendations
Use the chair on a hard, level surface or with a protective floor mat on carpeted floors. Inspect and tighten any adjustable fittings periodically according to the manufacturer's instructions. For optimal ergonomics, combine seat adjustments with an appropriately positioned desk, monitor and keyboard.

## FAQ

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Leasing for legal entities. 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 SUNFLEX 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 SUNFLEX 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/12023075/67511369_large.webp