Comfortable seat: The curved round seat features a comfortable 6 cm thick foam padding with a durable textile cover for high comfort. Adjustable: The height can be easily adjusted between 55 and 70 cm using a hydraulic system, operated via two easily accessible handles under the seat. At its lowest height, Ergo Boost fits standard desk heights. Base diameter: 38 cm. Maximum user weight: 120 kg. Seat height adjustment: 55 to 70 cm. Weight: 5.36 kg. 2-year warranty. Material: epoxy-coated metal, plastics, rubber, textile cover, foam padding.