The term "latex-trans" in the context of a porn video tag refers to content that involves the use of translucent or transparent latex clothing. Latex is a type of synthetic rubber known for its stretchiness, durability, and glossy appearance. In this case, the material is made to be see-through, which allows the viewer to see the body of the person wearing it more clearly. This tag is typically used to indicate scenes where latex clothing such as suits, dresses, or fetish wear is being worn in a transparent form, allowing for increased visual stimulation and eroticism.