3" x 5.5" 

Prayer to Saint Michael the Archangel on back:

Saint Michael the Archangel, defend us in battle; be our defense against the wickedness and snares of the devil. May God rebuke him, we humbly pray. And do thou, O prince of the heavenly host, by the power of God, cast into hell Satan and all the evil spirits who prowl about the world seeking the ruin of souls.

Amen.