Ergonomic Design - There is an adjustable lumbar support designed for your waist on the seat back. And also, the seat back can be adjusted up and down as a whole. They can both be adjusted to fit users’ height and are ergonomically designed to fully fit your waist and relieve back pain. Perfect Head Support - Our headrest is adjustable for height(up/down) and angles(front/rear) and users can adjust it according to their preference.The headrest fits perfectly around the neck, allowing you to relax while working. Height Adjustable, Fit For Various Tables - The height adjustment range of our chair is 3.74 inches. The armrests can also be adjusted by 2 inches and you can push your chair under the table to save space. Tilt Lock And Tension Adjustment - Our chair supports three levels of tilt and lock. At the same time, you can control the tilt tension by adjusting the knob, which allows you to choose freely. Denser, Softer Mesh - We've chosen a denser, softer mesh to allow your body to relax. Don't worry about the mesh will hurt your body or make your body uncomfortable. Buy it and enjoy its gentle hugs!