A tennis ball rendered in overlapping circles of yellow, olive, and navy sits centered within a geometric frame of rust-red triangles pointing inward from all sides, set against a cream ground. The composition channels vintage sports poster artwork with bold color blocking and clean lines, evoking the energy and graphic sophistication of early 20th-century modernism. 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.