Properties of the model: Upholstery Standart fabric Armrests Plastic Tilting mechanism Tilt control mechanism with several lock positions Support cross Plastic Gas lift Germany DIN 4550 2rd class Castors BIFMA 5,1 standard (US). Rod diameter 11 mm. Frame Nonmonolith Stuffing Standard polyurethane foam 25-40 kg/cu.m. Recommended maximum load 80 kg. Warranty 1 year