General description Our grey postage mailing bags are designed for efficient and secure shipping. They are lightweight yet durable, featuring a self-seal lip for easy packing. Available in a variety of sizes, these bags cater to all your mailing needs. Technical specifications Opening: 12" (304mm) Length: 16" (406mm) Self seal lip: 50mm Thickness: 60mu (micron) Other information We offer a wide range of address labels, document enclosed wallets, and pens to facilitate addressing and shipping. If you regularly send out large quantities of packages, consider using postal scales to assist with your shipping needs.