The properties of the model: Upholstery Fabric The Plastic armrests, height-adjustable, with pads made of soft plastic Swing mechanism with synchronous deviation of the seat and backrest 1:3, with the fixation of the chair in several positions. Seat height adjustment Plastic crosspiece with decorative plastic elements Gasparon class 3 standard Germany DIN 4550 Rollers Standard BIFMA 5,1 (USA). Stem diameter 11 mm. Non-Monolithic Frame The recommended maximum load is 120 kg. Warranty period 2 years