What should I look for when buying an ergonomic office chair?

When buying an ergonomic office chair, look for multiple adjustable features, such as seat height, armrests, backrest tilt, and lumbar support. Ensure the chair provides firm lumbar support to maintain the natural curve of your spine. The seat should be wide and deep enough for comfort, with a few inches of space between the back of your knees and the seat. Choose a chair made from breathable, comfortable materials like mesh for airflow or cushioned seats for added comfort. Additionally, mobility features like wheels and a swivel base can enhance ease of movement.