Shipping label pouches are made from clear plastic materials, most commonly PVC (polyvinyl chloride), and are often listed simply as 'plastic' in product descriptions.
They are typically waterproof and protect labels and packing slips from moisture and other damage. Many listings also note a durable construction that helps prevent bending or ripping during handling and transit.
Several listings specify a 2 mil thickness for these packing list envelopes. Thickness may vary by product and manufacturer.
They are usually clear or transparent for easy label visibility and provide a clean, professional presentation for shipping labels and packing slips.
These pouches commonly hold return and address labels, packing slips, name tags, and can often accommodate multiple sheets or papers without folding.