Dervish office is a contemporary chair with a comfortable upholstered seat and backrest on a height-adjustable gas piston base which swivels and tilts. The chair has a chromed steel five star base with plastic casters. The seat has a steel structure with “S” shape springs for extra flexibility and strength. This steel frame molded by injecting polyurethane foam. Dervish seat is upholstered with a removable zipper enclosed leather, PPM, leatherette or wool fabric slip cover. Dervish Office may be upholstered with variety of other colors as a special order with a minimum quantity required. The chair is suitable for both residential and commercial use.