Ergonomic office chair with sync contact mechanism and height adjustable. Operable office chair, meets all requirements for comfortable and good work. It adds a youthful touch to any room. Made entirely in Spain, which stands for quality. Technical details: Ergonomic backrest for better adjustment of the back. Backrest made of polypropylene with 20 mm thick honeycomb reinforcement. 5 cm thick foam and density 20 kg/m3. Ergonomic seat for more user comfort. Inner seat made of polypropylene with 20 mm thick honeycomb reinforcement. 5 cm thick foam and density 25 kg/m3. Seat and backrest padded with Bali fabric, black. Syncro contact mechanism. Height adjustable with 14 cm gas cylinder. Rotates 360°. telescope black. High strength polyamide base with 5 spokes and 55 cm diameter in black. Nylon wheels.