The Serenity Mattress is comprised of unique individually wrapped pocket coil innersprings that allow for independent motion of each coil. This configuration allows the coils to adjust and conform to different body types and weights. The innersprings are covered on each side with 2" of 100% pure natural latex, providing softness while the innersprings give support. The Serenity is then covered with organic cotton and wool quilted to an organic cotton cover. The corresponding 1000 coil-on-coil boxspring is recommended for this mattress.