The ZEN OFFICE 550 is a fully ergonomic chair that supports your body and brings balance to the workday. The adjustable lumbar support system allows you to find the perfect placement for your body type and height, adjust the lumbar support horizontally to find the placement – the lumbar support, like the chair itself, has a breathable design to allow your body to dispose of heat and to keep you comfortable throughout the day.The durable mesh on the ZEN OFFICE 550 provides a relaxed seating position and breathability. The minimalistic curved armrest is locked and always ready for a short break. With a reinforced nylon base, class 3 gas lift, and 50mm PU wheels, you can place your chair on any surface without worrying about damaging your flooring.The chair is fitted with a tilt mechanism allowing you to relax for a short break; the mechanism can be locked in the upright position when it’s time to get some work done. The ZEN OFFICE 550 comes with a detachable headrest that features height adjustability. Specifications:– Adjustable lumbar support system – Height adjustable headrest – Headrest can be removed. – Breathable mesh. – Curved minimalistic armrest. – Reinforced tall nylon base. – The 50mm PU – Tilt mechanism – Can be locked in 90-degree position.