USE: neck cushion install in the car chairs 1high density, super softness and elasticity can draw on and release external pressure very well 2.environment friendly and harmless 3.non-toxic, anti-bacteria, acarus-removing, mildew-resisting, hypo-allergic, with the related certificates. 4.No static charge during sleeping 5.can effectively improve sleeping quality because of the human engineering principle design. 6.Can effectively improve the cervical vertebrae, lumbar vertebrae and lower the blood pressure. 7.Correcting the posture of sitting, lying, recumbent 8.durable and never be deformed