... no static electricity. Safe and health.(2) Pocket spring (Individual pocket spring) inside: 20cm, Ø2.0, the pocket spring provide independent support, ... spine support, reduce tossing and turning, reduce friction between spring coils, minimized noise; After double time of heat ... treatment of spring coil, enhance resilience, sleep on it feeling totally relax.(3) With luxurious pillow top.Pillow ...