The properties of the model: Faux Leather Upholstery Armrests Plastic with soft pads, upholstered in eco-leather Swing mechanism swing Mechanism with fixation in the working position. Seat height adjustment mechanism 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