The front of the plastic card shows Jesus on the cross. It says:
Confession Prayers
Bless me Father for I have sinned. It has been (length of time) since my last confession. Since then, I (now confess your sins).
For these and all my other sins which I cannot remember or call to mind, I am truly sorry.
The back of the card has the Act of Contrition.
The card can fit in a wallet.