What are the differences between regular office chairs and ergonomic office chairs?

Regular office chairs typically have a basic design with limited adjustability and often lack adequate support, leading to poor posture and discomfort. They are usually made with standard materials without a focus on ergonomics. Ergonomic office chairs, on the other hand, are designed to support the spine and promote good posture, featuring highly adjustable components like seat height, armrests, and lumbar support. They are often made with high-quality materials intended for long-term use and comfort.