
Free-Float Mechanism
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Karo’s Free-Float mechanism is the ‘heart’ of all our Orthopedic office chairs. Unlike standard ergonomic chairs, orthopedic chairs have advanced adjustability to reduce spinal pressure and support rehabilitation. Orthopedic chairs are best suited for anyone with pre-existing conditions like chronic lower back pain, or sciatica. What is an orthopedic chair?
The free-float swivel & tilt mechanism gives you total freedom to adjust the backrest and seat of your office chair in a position that best suits your body.
With a free-float office chair mechanism, the angle and height of the backrest, as well as the seat inclination can all be adjusted independently from each other.

A Free-Float mechanism has the following ergonomic benefits:
- Independent Adjustment. The backrest position can be adjusted independently of the seat tilt angle.
- The seat angle can be set at a negative tilt (forward sloping), to create an ‘open’ angle at the hips of approximately 100 degrees. This ‘open’ angle is regarded as the ideal ergonomic seated angle – see The Perfect Ergonomic Office Setup for more information.
- Dynamic back support. In the free-float position, the chair is dynamic and the backrest provides continual back support by remaining in contact with your back and moving with you.
- Tension Adjustment. A tension adjuster allows you to adjust the amount of tension required to suit your body weight.
- Locked or Free-Float. You can lock the movement of both the seat and the backrest independently and in any position, or allow them to free-float.
- A Free-Float mechanism allows for Dynamic Sitting.
Wellback Orthopedic Chairs
Orthopedic Office Chairs have a Free-Float mechanism, offering optimal adjustability.
Posted on Mariè Ueckermann05/04/2026Trustindex verifies that the original source of the review is Google. Posted on Nivash Daya01/04/2026Trustindex verifies that the original source of the review is Google. the order arrived quickly (ordered Friday (Jhb), arrived Tuesday (CT)). The instructions are clear and everything (sit-stand desk and orthopedic chair) seems to be great qualityPosted on Xander Pieterse16/03/2026Trustindex verifies that the original source of the review is Google. I ordered the hilo 300 desk on a Wednesday and it arrived the Friday. Considering the desk being 180cm x 80cm it arrived extremely fast and in good condition. Very very satisfied with my purchase.Posted on Philip Hime13/03/2026Trustindex verifies that the original source of the review is Google. Just received our new Evolv Ergonomic Office Chair, fully assembled and is delivered free-of-charge. This exceptional chair comes equipped with a host of features, which assists in a long day at work in comfort. Best investment I have ever made.Posted on Graham Hunter12/03/2026Trustindex verifies that the original source of the review is Google. Very good and professionalPosted on Busenati Mwati11/03/2026Trustindex verifies that the original source of the review is Google. I was a bit hesitant to buy an office chair online without trying it first, but my experience with Karo has completely exceeded my expectations. I received my OrthoMax Orthopedic Chair just over a week ago, and honestly, it's been a game-changer for my posture and comfort. However, what really made this a 10/10 experience was the process. The website made purchasing easy, and true to their word, the chair arrived fully assembled — no struggling with screws and manuals! I also had a few specific questions before buying, so I reached out via WhatsApp. Their sales support was absolutely brilliant; they addressed every query thoroughly and made me feel confident in my choice. I couldn't be any happier with my purchase. If you're on the fence, go for it. Amazing product and top-tier service.Posted on Yolandi Rabie11/03/2026Trustindex verifies that the original source of the review is Google. Would Really recommend Karo. The desk was delivered quickly and effortlessly. The desk is really good quality and I enjoy it’s pre set settings.Posted on Yushir Maharaj10/03/2026Trustindex verifies that the original source of the review is Google. I recently bought the Fenix Ergonomic Office Chair and I’m very happy with it. After using it for daily work at my desk, it’s been comfortable from day one and works great for long hours. The adjustable lumbar support and armrests make a big difference, and the mesh back feels strong and supportive when leaning back. Delivery was smooth and easy and the chair arrived fully assembled, so it was just a matter of removing the packaging and using it right away. Instructions were clear and included a helpful YouTube guide for the adjustments. Customer service was excellent and communication throughout the process was clear and professional. Overall a great chair and a great buying experience from Karo. Highly recommended.Posted on Kim van Schoor09/03/2026Trustindex verifies that the original source of the review is Google. Posted on Kyle van Niekerk09/03/2026Trustindex verifies that the original source of the review is Google. One of the best experiences I have ever had buying a product online ever. The delivery times, the friendliness, and the quality of the product are significantly above most in South Africa. Let's also talk about the value for money. Will definitely be recommending Karo and lelia chair in the future.