[Soft, high-density foam]: Our sofa cushion supports are made of high density foam. The soft yet supportive padding provides optimal support even during prolonged use. [EASY INSTALLATION]:Simply slide under sofa cushions or cut to size - for robust hold without complicated installation. [Size Details]: Our sofa cushion cover measures 50 × 50 × 5 cm and is suitable for most family sofas. You can also cut them yourself. [Trapezoidal Design]:The trapezoidal design is more practical as many people like to sit in the middle of the sofa. Compared to the arched design, the trapezoidal design ensures more stability and a better fit. [MULTI-PURPOSE]: Specially designed for slouched sofas. Not only suitable for family sofas, but also for most sofa cushions to make the sofa soft again.