Heka Interior — active ergonomic chair
Clever Evo
Designed to your specifications — an active chair for active people.
With the active ergonomic Clever Evo chair you create an optimal work environment, ensure proper sitting posture and preserve spinal health. What's more — the Clever Evo chair offers the experience of “two chairs in one”:
The movable seat enables active sitting that strengthens muscles and encourages correct posture. This is an excellent choice for anyone who wants to keep their lumbar muscles relaxed and spine healthy even during long periods of sitting.
Innovative motion-locking mechanism lets you easily lock the chair when active movement is not needed. This is the very feature that sets the Clever Evo apart from similar chairs on the market.
Quick and easy installment payments
Business inquiry
We arrange special terms for larger orders. Leave us your details and we will get back to you as soon as possible.
- Fabric:
- Puma Black
- Headrest:
- With headrest
Perfect Pairing
7-day free trial at your workplace
Custom-made — produced in Slovenia
3-year warranty
Made in Slovenia, in Medvode
Clever Evo Technical Specifications
Key Features
- Smart mechanism activated by the user's own weight
- 3D-shaped seat
- Mechanism that allows active movement with a locking option
- Upholstery: Puma fabric (seat and headrest) and black mesh (backrest)
- 4D armrests
- Aluminum base
- Height-adjustable lumbar support
- Seat depth adjustment (sliding seat)
- Rubberized casters for hard surfaces
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 and headrest: upholstered in Puma fabric
Backrest: black mesh
Base: aluminum
Casters: rubberized, suitable for hard surfaces
All available fabrics and color options can be viewed in our material library.
Mechanism & Adjustments
Smart mechanism — activated by the user's own weight, it allows for active movement with a locking option.
Adjustments:
- Seat height
- Seat depth adjustment (sliding seat)
- Height-adjustable lumbar support
- 4D armrests — height, width, depth, angle
- Headrest — height and tilt
Delivery, Installation & Returns
Manufacturing and delivery: 4-6 weeks (custom-made product, 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 returns in accordance with the law.
For Businesses & Architects
Volume discounts: from 5 units onwards
Custom configuration: choose 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
Free consultation for 50+ workstations.
B2B SERVICES
For Architects & Project Planners
Comprehensive service from concept to delivery. Clever Evo is the standard choice for corporate offices in Slovenia.
CAD / BIM Files
All technical files (DWG, Revit) 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 the showroom
Medvode (SI) or Hotelkompetenzzentrum München (DE) — try every chair in person.
Volume Discounts
From 5 units upwards. For 200+ workstations, special offers and custom branding.
Documentation Downloads
All the technical data you need for office planning or a purchase decision.
Clever Evo Technical Data Sheet
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 workstations at NLB Emona BTC, in the meeting rooms of Triglav, in 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 Clever Evo differ from other ergonomic chairs?
Clever Evo is our flagship active chair — it combines a 2:1 synchronous mechanism, premium high-tensile mesh, and 4D armrests. This is the standard expected by programmers, editors, and architects for 8+ hours of sitting. Cheaper chairs have a "rocking" mechanism (the seat and backrest tilt together), which fatigues the legs in the long run. Clever Evo solves this.
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 will pick it up at no cost. If you're convinced, you keep it and pay. No risk, no questions asked.
Can I custom-configure Clever Evo?
Yes. Various fabrics, mesh, and leather are available. You can view all available options in our material library. For larger projects (5+ pieces), we offer custom configurations: corporate colors, a logo on the backrest. For special requests, please send an inquiry.
What's the warranty on Clever Evo?
The 3-year manufacturer's warranty covers the mechanism, gas lift, and material defects. Our in-house production in Medvode ensures that spare parts are available even after the warranty expires.
Do you have a discount for larger quantities or projects?
Yes. Quantity discounts start from 5 pieces. For 200+ workstations (e.g., NLB Emona — 1,200 seats), we prepare a special offer with custom configuration, free consultation, and an extended warranty. Send an inquiry or call +386 1 361 90 28.
Is Clever Evo suitable for tall or shorter people?
Clever Evo has independently adjustable elements: seat height, seat depth, lumbar support, 4D armrests, and headrest. The precise range of adjustments and maximum load capacity are in the technical sheet (PDF) above. For individual consultation regarding suitability, call +386 1 361 90 28.
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. Try it for 7 days in your actual 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.