The Teknik Office Ergo Blaster Black Fabric Operator chair is our entry level solution for light office use, easy to use and assemble, it's a great addition to your home or work office needs. It has a medium sized backrest in a black Mainline Plus fabric, gas lift seat height adjustment, tamper proof seat fixings, a height adjustable seat and a sturdy nylon base with wheels. It also accepts optional arm rests.