Vertical stripes in mustard yellow, deep navy, slate blue, and orange interlock and wave across the composition, their parallel lines bending and undulating as if responding to invisible pressure. The palette and rhythm evoke mid-century modernism, with bold color blocking and hypnotic linear patterns creating a sense of structured energy and visual movement. 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.