A labeled anatomical diagram of a tuna rendered in bold black lines and sections against a bright coral pink ground, with Japanese characters and English labels identifying each cut and part of the fish. The composition centers the fish in profile with a direct, instructional approach, accented by stark black text at the base reading "マグロの解剖学 TUNA ANATOMY" in strong capital lettering. 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.