These durable are Packing List Envelopes available with an extra strong adhesive for keeping the bond safe and secure. They are used as shipping boxes, shipping envelopes, mailing tubes, and more with their unmatched strength and quality standards. Designed to stay the goods securely in place, they are sure to withstand the wear and tear of shipping. With back loader design, they are sure to keep the goods secure during transit against weather and tampering. They are delved from pressure-sensitive polyethylene to meet the needs of warehouses, postal centers, couriers, mailing rooms, and more. These Packing List Envelopes are provided with backside full paper gumming to ensure secure, safe and strong adhesive properties.