... body design,● Ease cervical fatigue,● Butterfly-shaped design firm head,● Help you develop a good sleeping position,● Perfect care ... Butterfly Memory Foam Pillow:Features:● Fit the human head after the head of the arc perfect ergonomic perfect design,● both ... : C. Outer Butterfly Massage Pillow:Features:● Surface 2-75px massage the head,● Promote blood circulation in the head,● Increase brain oxygen,● ...