The Duolatex is made up of 11 unique layers.... 1. Sanatised outer fabric 2. Comfort foam 3. Ergonomical layer 4. TNT 5. Latex (density 80) 6. Eliocel 7. Latex (density 80) 8. TNT 9. Ergonomical layer 10. Comfort foam 11. Sanatised outer fabric