Moustache® Ergonomic High-Back Mesh Office Chair 2D Headrest & 3D Armrests, Weight Activated Auto-Balance MechanismThis minimalistic, easy-to-use Moustache® Ergonomic Mesh Office Chair provides intuitive adjustments and a sleek design that suits any workspace. Aiming to a simpler way to sit and work in comfort, we designed a Weight Activated Auto-Balance Mechanism with Seat Slider, which can be self-regulating according to user’s weight to optimal seating experience immediately. It has a synchronous tilt and can closely approximate the ankle and hip pivots of the body may provide a comfortable and relaxed experience for the sitter.A properly designed headrest or neckroll can make all the difference in giving a user’s neck and upper back muscles a break from the tiring task of supporting the head during computer, paper and a myriad of other tasks. This Moustache Office Chair Headrest is adjustable in height and angle to adapt to your sitting postures to reduce the pressure on the spine. Meanwhile it can be easily disassembled to satisfy various needs.Lumbar Support is highly consistent with the curvature of your back spine so as the body can be closer to the desk when working, which is effectively dispersing the pressure on the lumbar spine when sitting with a straight back to reduce fatigue. It can be adjusted to be tightened or loose, or higher & lower.It features Synchronous Tilt & Integrated Armrests, The Intergrated body-friendly armrests move together with the seat pan and stay with you during recline, always keeping you in a supported balance as well as providing a comfortable and relaxed experience.