The properties of the model: Faux Leather Upholstery The Plastic fold-up armrests with soft pads upholstered in fabric Swing mechanism With the ability to fix the chair in any position. 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