A 4-by-4 grid of concentric rounded squares alternates between warm gold-yellow and cool avocado-green tones, each nested layer shifting slightly in hue to create subtle depth and visual rhythm. The palette evokes 1970s color sensibilities, while the mathematical precision and symmetrical repetition convey a meditative, almost hypnotic quality that speaks to that era's fascination with op-art geometry. 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.