General description The Couch Cushion Support for Sagging Seat is designed to effectively repair sagging sofas caused by long-term use. This product restores the original support of your sofa, enhancing comfort and prolonging its lifespan. Technical specifications Size: 20 x 20 x 2 inches Material: 40D high-density sponge Color: Black Package Contents: 3 Couch Cushion Supports Measurement allowed error: +/- 1-3 cm Usage Simply place the sofa support cushion under the sunken sofa cushion for immediate support. Designed to provide stable support and improve comfort while sitting.