The black 13440 Orchestra Chair from KyM is a professional orchestra chair with a pneumatic seat-height adjustment and release lever. The upholstered seat and backrest cushioning and fabric are made from fire-resistant materials (Trevira CS) and the powder-coated base is made from sturdy steel tubes. The height of the backrest and the seat angle are also adjustable. In addition, the rounded seat cushion with ventilation holes and breathable foam provides comfortable seating.