The viscoelastic material of the pad adapts perfectly to the anatomic Body contours, thus providing good pressure relief and blood circulation in Connection with one's own body heat! My physical complaints are: pain in the lower lumbar region in L5 / S1 and discrete Rechtsausbiegung the cervical spine! Since then I have the pillow, auspro- (all kinds of other variants cushion biert) I morgends after getting no more pain in the lumbar vertebra, no tense neck and no more headaches! For a good night's sleep had! To the 40x80cm pillows I have currently a 7 zone cold foam mattress!