Corner-blocked frame High-quality foam cushions wrapped in poly fiber Loose seat and reversible back cushions Polyester velvet upholstery Chrome-tone metal feet Assembly required Ships in 2 boxes 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