Contemporary design mesh back executive chair Black mesh back with a fabric seat pad Mesh back textile has a ventilating effect keeping you cool while you are seated Upholstered seat pad with a fantastic choice of colours available Waterfall seat front alleviates pressure on the thighs while seated Soft padded height adjustable armrests Adjustable lumbar function Complete with synchro mechanism Gas seat height adjustment Gas lift tested up to 150kg Stylish 5 star chrome base complete with castors We have offered the most popular fabric colours, but you may customise the chairs in any of the Xtreme Plus fabrics at no extra cost, please call our sales team on 0844 2487001 for further details Recommended for 8 hours usage a day 2 year manufacturers guarantee Delivered flat packed for easy self assembly Synchro Mechanism Fix or free float the angle of the seat & back rest together usually in a ratio of 1:2. So every 1 degree the seat tilts the back tilts 2