Black semicircles and quarter-circles interlace across a cream ground in a repeating geometric grid, each cell containing curved forms that create the illusion of three-dimensional spheres and chambers. The high-contrast composition achieves a bold, rhythmic balance through its systematic arrangement, evoking the geometric optimism of mid-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.