Self-Adhesive: Packing list envelopes typically come with a self-adhesive backing, making them easy to attach securely to packages without the need for additional tape or adhesives.

Clear Window: Most packing list envelopes have a transparent window that allows important shipping documents, such as packing lists, invoices, and waybills, to be visible without opening the envelope.

Protective  Barrier: Packing list envelopes provide a protective barrier for enclosed documents, shielding them from environmental factors like water, dust, and dirt.

Tamper-Evident: Some packing list envelopes are designed with tamper-evident features, which show if the envelope has been opened or tampered with during transit.

Customizable: They often come in various sizes and can be customized with labels, branding, or printed messages to suit specific business needs.

Sequential Numbering: Some envelopes have sequential numbering for tracking and record-keeping purposes, which can be especially useful in logistics and inventory management.