8 Layers of Comfort and protection (Far - Infrared Anion chip) Layer 1 - Silky smooth surface for quick absorbing Layer 2 - Extra protection on both sides Layer 3 - Far-Infrared and Anion generating insert Layer 4 - 6- Dust-free paper Layer 5 - Active water absorbent materials, 5 time more absorbent than conventional ones Layer 7- Dry and ventilated base materials Layer 8 - Food grade plastic cover at the back