When buying an ergonomic chair, look for one that feels comfortable for even long sitting sessions, offers many multiple adjustment options, also supports your spine’s own natural curve. Your body should be adapted to via a good ergonomic chair as well as to not adapt to it.
Appearance or even price can easily distract, but key features do still matter most. These features have an impact upon your posture and your comfort along with daily wellbeing. An ergonomic chair that is great will seem custom-built, even if it isn't custom-built.
Priorities adjustability, it’s what makes a chair truly ergonomic

Look for a chair featuring armrests, backrest tilt, lumbar support, as well as adjustable seat height. You can fine-tune this chair to suit what your height is. You can also adjust it for your own sitting posture.
Your arms should sit level with your desk your knees should bend roughly at a 90-degree angle and your feet should rest flat on the floor. Fixed chairs may feel okay initially yet soon may cause discomfort.
Also, check for lumbar support moving along your spine and a seat allowing enough depth without cutting into your thighs. In addition, ensure armrests can raise, lower, or shift inward for your needs. These little adjustments do differ greatly after one is sitting for hours.
Comfort and materials matter, especially for long hours

Look for a seat that is firm enough for it to support you without feeling too hard, and to keep you cool, a backrest that breathes so well. High-resilience foam makes long sessions much more comfortable. Mesh as another material can also make comfortable long sessions.
Breathability will become important for you if you work within a warm environment or sit still for extended periods. Seats that are well-padded along with a slight contouring help distribute weight in an even way, while mesh-backed chairs promote airflow to reduce heat buildup.
Strong frames, easy-moving casters, and silent recline devices may increase comfort and lifespan with structure quality. The investment won’t be worth it for a chair that loses shape, shifts, or squeaks after months.
Buy a chair for daily use that holds up, for your posture that supports, and for your body that fits. A truly ergonomic chair is in fact different. Those features are absent from standard chairs.