Manilas refer to a type of shipping tag or label that can be tied to packages or folders. These tags can be easily written on and are typically made of durable material. If you are looking for synonyms for manilas, consider using words like shipping tag, label, ticket, or even baggage tag. Other possible synonyms might include markers, identification tags, or shipping labels. Regardless of what word you choose, the underlying meaning remains the same - a durable, reliable tag that helps you identify and track your packages and items.