Heka Interior — ergonomic office chair
Demi
The Demi chair charms with its comfortable, soft upholstery and modern silhouette. The rounded shape of the back and seat provides pleasant support, while the metal base ensures stability and an elegant look. The perfect choice for dining rooms, living spaces or modern offices where you want to combine style and comfort.
Technical specifications Demi
Key Features
- Ergonomic spinal support
- Thoughtfully designed for comfortable seating
- High-quality, breathable materials
- Made in Slovenia
- 3-year warranty
- 7-day free trial
- Custom configuration (fabrics, colors)
Dimensions & Technical Specifications
Seat height: ___ cm (adjustable)
Seat width: ___ cm
Seat depth: ___ cm
Backrest height: ___ cm
Weight: ___ kg
Maximum load: ___ kg
Precise specifications are in the attached technical sheet (PDF) below.
Materials & Fabrics
Seat: quality fabric with high-quality foam (details in the PDF technical sheet)
Backrest: quality mesh / fabric (details in the PDF technical sheet)
Base: robust base (details in the PDF technical sheet)
Casters: quality casters (details in the PDF technical sheet)
All available fabrics and color options can be viewed in our material library.
Mechanism & Adjustments
Ergonomic mechanism — a thoughtfully designed mechanism for comfortable and correct posture.
Adjustments:
- adjustable seat height
- adjustable backrest
- adjustable armrests
- detailed adjustments in the technical sheet below
Delivery, Installation & Returns
Manufacturing and delivery: 4-6 weeks (made to order, in-house production in Medvode)
EU delivery: 4-7 weeks
Free 7-day trial in your workspace. If the chair isn't the right fit, we will collect it free of charge.
14-day return in accordance with the law.
For Businesses & Architects
Volume discounts: from 5 units
Made-to-order configuration: choose the fabric, frame color, base, and accessories
Heka references: NLB Emona BTC (1,200 workstations), Triglav, Volvo, Marriott, Radisson
CAD/DWG files for 3D models and floor plans
Chair showroom: Medvode, Žlebe 1
Project contact: sales@heka-interior.com
B2B SERVICES
For Architects & Project Planners
Comprehensive service from concept to delivery. Demi is the standard choice for offices and coworking spaces.
CAD / BIM Files
All technical files (DWG) for your 3D models and office floor plans.
Personal Consultation
Our team of technologists and project managers will arrange a meeting with you. Free consultation for 50+ workstations.
Visit Our Showroom
Chair showroom in Medvode, Žlebe 1 — try every chair in person.
Volume Discounts
From 5 items upwards. For 200+ locations, special offers and custom branding.
Documentation Downloads
All the technical data you need for office planning or a purchase decision.
Technical data sheet Demi
Dimensions, materials, mechanism and certificates in PDF format.
TRUSTED BY
Our products in leading Slovenian and European companies
Heka chairs are used in 1,200 workplaces at NLB Emona BTC, in the meeting rooms of Triglav, Volvo service centers, and in Marriott and Radisson hotel rooms across Europe.
Years of Slovenian tradition
Slovenian and European partners
Years of warranty
Days of free trial
Frequently Asked Questions
How does Demi differ from other ergonomic chairs?
Designed in Slovenia with a focus on ergonomics, high-quality materials, and sustainable manufacturing. Each chair is custom-configured for the client — from the fabric to the frame color and base type.
How does the 7-day free trial work?
We deliver the chair to your address (office or home). Try it for 7 days in your actual work environment. If it's not a good fit, we'll take it back at no cost. If you're convinced, you keep it and pay. No risk, no questions asked.
Can Demi be custom-configured?
Yes. You can choose the fabric, frame color, base, and accessories. For larger projects, we offer additional configuration and branding options. Contact us at sales@heka-interior.com.
What's the warranty on Demi?
The 3-year manufacturer's warranty covers the mechanism, gas lift, and material defects. With our in-house production in Medvode, we provide spare parts even after the warranty expires.
Do you offer discounts for larger quantities or projects?
Yes. Quantity discounts start from 5 items. For 200+ workstations (e.g., NLB Emona — 1,200 workstations), we prepare a special offer with custom configuration, free consultation, and an extended warranty. Send an inquiry or call +386 1 361 90 28.
Who is this chair suitable for?
Ideal for those who spend more than 4 hours a day at their desk — programmers, designers, architects, project managers, and executives. The chair supports active sitting and reduces spinal strain.
Didn't find your answer?
Write to us at sales@heka-interior.com — we respond within 24 hours. For urgent projects, call +386 1 361 90 28.
Why buy from Heka
Heka Interior is more than a chair manufacturer — we are a long-term partner for your office.
7-day free trial
We deliver the chair to your address. Test it for 7 days in your real work environment. If it's not for you, we'll pick it up at no cost.
Slovenian in-house production
Every Heka chair is made in Medvode. Our in-house manufacturing ensures service and spare parts are available even after the warranty expires.
3-year warranty
Premium materials and in-house quality control before every shipment. Local support in Slovenian.
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