Colorful geometric cats in shades of magenta, blue, orange, cyan, and red perform mathematical equations and hold clocks against a soft gray ground. The repeating pattern combines simple line-drawn felines with numbers, symbols, and timepieces in a playful, grid-based composition that balances whimsy with orderly rhythm. 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.