Frame made from welded, powder-coated or chrome-plated round steel tube. Optionally as a chair with arms with plastic covering, as a chair with row connector, as a chair with writing and laptop surface or with 4 double castors. Seat shell made of double-walled, structured polypropylene (LuPo) for comfortable sitting with air-cushion effect. With concealed seat fixture and handle hole. Equipment and options. Glide elements for hard and soft floors or 2C universal glide. With book/storage basket under the seat pan. The following material groups are available to choose from: Frame made of steel tube: M1,(chrome-plated); Seat and backrest: C1.