Office Typist Chair - Ergonomic

elastic waist support environmentally friendly materials Ergonomic Material feet,hydrostatic bearing Silent five-star feet,hydrostatic bearing Fixed elastic waist gas rod height adjustment,universal casters High-density rebound sponge Maximum seat height Minimum seat height nylon five-star feet,hydrostatic Office Typist rebound Fixed elastic rotation,free height adjustment,universal Specification Seat Specification Seat width strong rebound Fixed Typist chair