Material and Use – Acrylic Round Cake Cards use to separate each tier of the cake, so they are not stuck and acrylic material doesn’t get soaked unlike paper or cardboard cards, At the same time can be used also for sharp edges. Use – The Sturdy Cake Stackers/card cake support system has been designed to take the stress out of travelling with a tiered cake, specifically to help prevent cakes toppling over during transportation.