Core Products calls this neck roll a "Cervical Traction System Foam Therapy Roll" because it is too firm to call it a pillow. The purpose of this neck roll is to expand the cervical spine into a proper forward arch (lordosis). Because of postural strains many people lose the normal cervical forward curve (lordosis) and end up with a straighten or reversed neck (alordosis) which changes the weight-bearing mechanics of the cervical spine. The discs and articular facet joints, typically of the mid-to-lower cervical spine (C4-7), will then degenerate at an accelerated rate. Use of the neck roll on a daily basis for 12-20 minutes is recommended to very gradually help restore the normal cervical forward curve along with other therapies. Core Products describes this item as follows: "Whether you're looking to alleviate an injury or seeking more comfortable sleep, the Cervical Traction System Foam Therapy Roll serves a variety of support applications. Made of precision-cut foam and in a cotton/polyester cover, this cervical roll offers subtle elevation and superior firmness. The Cervical Traction System Foam Therapy Roll has a small profile to make it easier to achieve proper neck and back support without extra bulk. Take it with you when you travel; this foam therapy roll is lightweight and fits inside a standard pillowcase. The Cervical Traction System Foam Therapy Roll is available only in black."