Packing List Envelopes – 4.5″ x 6″ are self-adhesive document pouches designed to securely hold and display packing slips, invoices, and shipping paperwork on packages. Made from durable, weather-resistant material, they help protect documents from moisture, dirt, and damage during transit while keeping information clearly visible. Ideal for warehouses, shipping operations, and e-commerce fulfillment, they provide a reliable and efficient packaging solution.