Six Hot To Trot Greeting Cards. This card is popular with anyone who is mad about ponies or horses. It's perfect for a little girl's birthday too, a pony wearing a dress always makes them giggle! The card is blank inside. • Size: The card is 25.4 ants long x 35.6 ants long. Or, for those who don’t work in ant sizing, it’s 5”x7” (127mm X 178mm). • Professionally printed onto heavyweight card stock: 300gsm ivory hammered card. The card comes with a recycled brown envelope and is wrapped in a cellophane sleeve.