Chime Hybrid 10" Twin Mattress in a Box NEW AY-M69611Retail price $565. Enjoy endless possibilities for restful sleep with this hybrid innerspring twin mattress. You get the best of both worldsthe pressure relief of cooling gel infused memory foam, coupled with body contouring pocketed coils for superior support. Rest assured that high density quilt foam provides the comforting feel you love. Plus, this mattress arrives in a box for quick, easy setup. Simply bring it to your room, cut away the plastic