The transparent nature of the material allows users to see the contents of the piggy bank without needing to open it, providing a visual reminder of their savings progress. The design often includes a slot for inserting coins or bills and a removable plug or lid for accessing the saved money when needed. This type of piggy bank combines the classic charm of a piggy bank with the modern appeal of transparent, shatter-resistant plexiglass material. It's a practical and stylish way to encourage saving money while offering a clear view of the savings inside.