Corner-blocked frameLoose back and seat cushionsHigh-resiliency foam cushions wrapped in thick poly fiberBolster pillows includedPillows with soft polyfillPolyester upholsteryMetal accent legs with black finishPlatform foundation system resists sagging 3x better than spring system after 20,000 testing cycles by providing more even supportSmooth platform foundation maintains tight, wrinkle-free look without dips or sags that can occur over time with sinuous spring foundations