TEAR-PROOF MAILING BAGS: Perfect for sending multiple items, the postal bags are made from durable material. Tear-proof and resistant to water. SELF-SEAL CLOSURE: The sealing lip permanently close and conceal the bag with strong adhesive glue. Put the content in the bag, peel the strap and seal carefully. Once it is closed, it is tough to open again, ensuring total privacy of the items sent. The high-quality material of the mailing bags is 100% opaque to ensure confidentiality and privacy. MAILING SOLUTION: Designed to be lightweight and flexible, these mailing bags are the ideal mailing solutions for a wide variety of business or private use. The postal bags have a great capacity to bear the weight of books, magazines, documents, clothes, shoes or other office and stationery items. NJGoodz grey mailing bags are fully recyclable (Code 4 – LDPE plastic) & made from recycled polythene making them the perfect economical & sustainable postal packaging solution for e-commerce businesses & retailers alike! Our poly mailers are made using 3 layer co-extrusion technology making them stronger with higher tensile strength & load capacity than regular mono-film poly mailing bags. These postal bags are 55 microns thick, lightweight, waterproof & smell-free. They come with an easy peel & seal strip backed by an enhanced hot melt adhesive strip – in other words, you save on time and effort when packing and don’t require extra tape or glue to achieve a secure seal. The strong adhesive we use is designed to tear the bag upon opening and cannot be resealed for added protection as any attempts to tamper with the bag will be immediately evident. Furthermore, we give our bags a black inner layer which makes them extra secure by completely concealing the contents. These packaging bags are available in a wide range of sizes, from small to large: 4.5×7 inches, 6.5×9 inches, 9×12 inches, 10×14 inches, 12×16 inches, 13×19 inches, 14×21 inches, 16×21 inches, 17×24 inches, 21×24 inches, 22×30 inches, 24×36 inches, 28×24 inches, 34×42 inches. Inside colour: Black. Closure type: self-seal (strong adhesive glue). Water and dirt resistant. Wholesale prices available for large orders. Opening times 09.00am- 04.00pm (Monday-Friday).