Tamper Proof Polybag Pouches Cover for Shipping Packing (Size 8x11)Tamper Proof Polybags Bags Pouches Cover for Shipping Packing These polybags have hot melt pressure sensitive adhesive strip for easy and permanent closure, once sealed properly these bags cannot be opened and has to be torn. This tamper evident seal will ensure safety of the inner content. Made from Co Extruded Multilayer film makes it easy to write with regular ball point pen or permanent marker. Courier bag is an essential item for sending items