Six cartoon cats progress from thin to increasingly rotund across a rainbow gradient scale, each illustration rendered in warm brown tones with simple, expressive proportions and playful postures. The chart mimics clinical measurement aesthetics while celebrating feline weight gain with bright color blocks ranging from green through yellow, orange, and red, creating humor through the contrast between scientific presentation and silly subject matter. 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.