The liner has a thin plastic base and a tab for easy removal. It is made of two layers of foam, the top layer is smooth and easy to clean. This will hold 12 DFX/TAG/Snazaroo/Cameleon/Global/ Kryvaline 30 or 32 gram cakes. *This insert fits in the Black Empty Pro Laptop Cases. It does not fit in the wooden case with the metal latch.