A detailed technical patent diagram of a double bass fills the composition with intricate line work and labeled components rendered in black ink on white paper. The drawing captures both the instrument's full body and numerous close-up details of its mechanical parts, creating a dense, schematic mood that celebrates the bass as an engineering marvel as much as a musical object. 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.