Multi color mailing bags , Mailing Bags are fully recyclable & 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.