Four black cats with bright yellow eyes peer out from a warm kraft paper grid, each wearing a colorful paper party hat in coral, green, or blue. Their simple white whisker marks and playful expressions create a whimsical, celebratory mood rendered in textured illustration against a speckled tan background. Printed on smooth white card stock and made to order, artwork on the front, blank inside, envelopes included in every set. A handwritten note that arrives as an independent artist's work.