Concentric arches rendered in thin white lines rise from the bottom of a warm terracotta rectangle, creating a bold geometric rainbow that echoes the minimalist language of mid-century modernism. The composition balances organic curvature with architectural precision, evoking both natural phenomena and human-made structure against a solid burnt-orange ground. 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.