Thanks to its self-regulating synchronised mechanism, the ACX office chair provides ergonomic comfort for users of different sizes. Only the seat height requires manual adjustment. The understated aesthetics of ACX, as well as its construction, materials, production, logistics and maintenance, are designed with a focus on longevity – while keeping the carbon footprint as low as possible. The upholstered back of ACX Pad High is equipped with a patented lumbar support that adjusts automatically. In addition, a neck support augments the ergonomic functions: it can be manually tilted and adjusted to the desired height, it provides comfortable, sprung support for the sitter's head and neck when leaning back and helps them to maintain a level field of vision. This alleviates tension in the neck muscles, even during extended periods of reclined sitting. The ACX Pad High fabric cover comes in a large selection of colours and can be removed and refitted at any time, making it easier to clean or replace.