Corner-blocked frame Attached back and loose seat cushion High-resiliency foam cushions wrapped in poly fiber Accent pillow included Pillow with soft polyfill Polyester upholstery Non-skid legs Platform foundation system resists sagging 3x better than spring system after 20,000 testing cycles by providing more even support Smooth platform foundation maintains tight, wrinkle-free look without dips or sags that can occur over time with sinuous spring foundations