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. Constructed from woven polyester with a soft microfiber lining and a sturdy zipper, made to order for 13 and 15 inch laptops. Everyday protection carrying an independent artist's work, not another plain black sleeve.