Simmons Beautyrest Elements Plush Mattress, Twin No Flip design. Enjoy the benefits of the patented Simmons Pocketed Coil technology 9" thick Conformability: Conforms to your shape for individualized comfort and support. Motion Separation Provides peaceful sleep by reducing motion across the sleeping surface Durability: Lasts and lasts due to the incredible durability of pocketed coil springs No Flip design. Enjoy the benefits of the patented Simmons Pocketed Coil technology Conformability: Conforms to your shape for individualized comfort and support Motion Separation Provides peaceful sleep by reducing motion across the sleeping surface Durability: Lasts and lasts due to the incredible durability of pocketed coil springs