A technical patent drawing for a baseball diamond layout appears in white linework against a charcoal black ground, rendered in the style of a 19th-century inventor's blueprint complete with handwritten signatures and official patent markings. The composition captures the essential geometry of the playing field with mechanical precision, evoking both the scientific rigor of patents and the timeless strategy of America's pastime. 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.