Properties of the model: Upholstery TW fabric Armrests Plastic Tilting mechanism Height adjustment mechanism, back support spring mechanism Support cross Plastic 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. Container weight/size 10,9 kg / 0,12 m3 Warranty 2 years