Properties of the model: Upholstery Fabric standart Armrests Plastic Tilting mechanism Asynchronous tilt mechanism with independent sear and searback angle adjustment, height adjustment Support cross Metal Gas lift Germany DIN 4550 3rd 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 100 kg. Warranty 2 years