The Zinus 10 inch True Support Hybrid Pocket Spring Mattress, Twin offers a firm feel thanks to our best support system made up of individually wrapped coils that respond to your movements to provide customized spinal alignment. They also isolate motion on each side of the bed to reduce partner disturbances, delivering night after night of restful, uninterrupted sleep. Made with CertiPUR-US® certified foams, this hybrid mattress guarantees high quality and no harmful chemicals where you sleep. Efficiently compressed, packed, and shipped to your doorstep in one box, it also comes with a 10-year limited warranty for added peace of mind.