Magicians are familiar with the Card Change case, and we have several models, including double change ones, and locking models.
This is just a regular card changing case very well made in plastic, (very similar in construction and appearance to the much coveted Tenyo Card Case, without the locking feature) and comes to you at an incredibly low price. With each case we supply you our instructions for getting the best of this utility prop.

Secret instructions Enclosed.