J&amp;M Furniture - White C192-3 Swivel Barstool - C192-3 White Swivel Barstool by M Furnitswivels 360 degrees and has a hydraulic adjustable seat. Manufactured with foam injection molding and a unique curvy design.Advantages of foam injection molding include absence of the sink mark on the part surface, better geometric accuracy, weight reduction, low back pressure, faster cycle time, better weld line strength, high stiffness-to-weight ratio, etc.