Corner-blocked frame Loose non-reversible seat cushions Attached back cushions with button tufting High-quality foam cushions wrapped in poly fiber Accent pillows included Pillows with soft polyfill Polyester/viscose blend upholstery Tapered accent 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