Polyester upholstery, Platform foundation system resists sagging 3x better than spring system after 20,000 testing cycles by providing more even support, Reversible back and seat cushions, Smooth platform foundation maintains tight, wrinkle-free look without dips or sags that can occur over time with sinuous spring foundations, High-resiliency foam cushions wrapped in thick poly fiber, Accent pillows included, Corner-blocked frame, Pillows with feather-fiber blend