Corgi Valentine's Day Postcards. Three messages included: Hello Corgeous!, Happy Valentine's Day Corgeous! and Hello there, Corgeous! Set of 12. These postcards are legal size for mailing via USPS. They measure 4.25" x 5.5". They come as shown with space for writing and addressing on the back. These cards can be personalized with any of the Corgi faces available. Each Corgi will be replaced with your selection on all 12 cards.