INSERT 5: 5 Layers Bamboo Cotton Double Gussets Insert: 2 Layer Bamboo Cotton Outside + 3Layers Microfiber Layers Inside, Reusable,Super Absorpt INSERT6: Material:100% Cotton 4x6x4 Layers of cotton ensure maximum absorbency, especially when compared to hemp or synthetic diapers. When used as an insert, the diapers are 14 layers thick