A comprehensive chart of maritime signal flags arranged in orderly rows against a deep navy background, each flag rendered in bold geometric blocks of red, yellow, white, black, and blue with crisp white letter labels below. The composition is educational yet visually striking, with the flags' simple shapes and saturated colors creating a rhythmic, almost graphic quality that feels both vintage and timeless. Printed to order on a soft, absorbent mat with a no-slip backing, ready underfoot the moment you step out. The kind of art you don't expect on a bathroom floor.