referring to the drawing , a sound sleep posture pillow system according to the invention comprises an elongate pillow 10 fitted with a flat cushion 12 , a cervical roll 14 , a lumbar roll insert 16 , a knee pillow 18 and a knee extension 20 . in an illustrative embodiment , the pillow is approximately 72 inches long and 22 inches wide . in a preferred use , the posture pillow is placed atop a standard mattress . the flat cushion and cervical roll are of medium density and are embedded in the polyfill or down interior filling of the pillow . the down or polyfill areas are indicated by section lines in fig1 and 2 . the flat cushion is preferably 15 inches long , 6 inches wide and 3 inches high . the cervical roll is preferably 15 inches long and 22 inches in diameter . as shown in fig3 and 4 the opposite top edges 12a , b ; 14a , b of the flat cushion and cervical roll are relieved or cut away to support the head and neck in the semi - prone position shown in fig7 . the lumbar roll is a removable insert in that some individuals may tolerate only a very small lumbar support or none at all . so the lumbar roll insert may vary in size from 15 inches long , 2 inches wide and 1 inch high to 15 inches long , 4 inches wide , and 2 inches high . the knee position of the posture pillow includes a knee pillow embedded in the down or polyfill pillow and measuring approximately 15 inches long , 13 inches wide , and 5 inches high . a removable knee extension insert may be placed over the knee pillow and measures 15 inches long , 13 inches wide , and 5 inches high . both the knee pillow and the knee extension are medium - firm density . in use , the body weight will push the flat cushion , cervical roll , and lumbar cushions down and the cushions / roll will &# 34 ; float &# 34 ; in the polyfill or down providing gentle support . in the supine position shown in fig5 the cervical roll provides support to maintain the normal cervical lordosis , and the flat cushion provides support for the skull . the insertable lumbar roll provides gentle support to maintain the normal lumbar lordosis . the knee pillow provides support from 5 inches to 8 inches ( with the insertable 3 inch extension ) and allows a gentle pelvic tilting posture which reduces stress on the lower back . in the side lying position of fig6 the cervical roll and flat cushion provide proper neck and skull support , the center portion becomes a pillow , while the knee pillow can be positioned between the knees to reduce some pressure on the hips . while a prone sleeping position is not recommended , the body pillow used in the semi - prone position shown in fig7 can reduce some of the stresses induced in this position . the center portion of the body pillow is positioned against the torso ( sleeping at an angle of 40 degrees or less ), giving the feeling of sleeping on the stomach ( i . e ., semi - prone position ). the knee pillow is positioned between the knees and further prevents the person from reaching their stomach . the cervical roll and flat cushion have cutouts 12a , b ; 14a , b on each end to provide support to a persons head and neck while maintaining the correct anterior - to - posterior position of the neck and skull in relation to the rest of the spine , that is to say , no head rotation with respect to the spine . the dimensions given above are for an adult configuration of the posture pillow and its cushions , rolls and inserts . smaller scaled body pillows can be produced for most children . various changes may be made to the structure embodying the principles of the invention . the foregoing embodiments are set forth in an illustrative and not in a limiting sense . the scope of the invention is defined by the claims appended hereto .
a sound sleep system and provides a full body length orthopedic posture pillow that maintains correct spinal posture during supine , side lying , and prone sleep positions .