Product detailsTamper proof and self-adhesive courier bags / nylons, mailing bags or poly-mailer Shipping bags are widely used by e-commerce business, courier & logistics companies and other businesses. It has a white outer and black inner sides with an invoice pocket, to easily slip in your waybill details or Invoice.?Size is Medium, 30x48cm, 12/18 Inches (A3). Package quantity is 25 pieces (pcs).It can be written on with a marker. 110mm thickness, self-seal pressure sensitive adhesive on the flap and tamper evident. Once sealed, any tamper is clearly seen. You can now deliver your products to your customers in a secure, convenient and professional way. WHITE outer and BLACK inner waterproof courier shipping bag with a seal. Produced with an INVOICE POCKET to carry shipping labels(customer information).Courier bags are PLAIN FLIERS. Waterproof,Tamper proof with Invoice or receipt pocket. Suitable for proper packing/shipping items. It spells professionalism. Purchase of these bags? will ensure fulfillment of secure and convenient deliveries. Ensure to deliver your products across to your customers in a more unique and professional way, opt for this courier packaging bag packed in.USED BY:1) Logistics, Courier or Dispatch Companies2) Online Sales and E-commerce Sales3) Retailers4) Online stores5) Corporate organizations6) IndividualsFITS:1) Phones in manufacturer cases,2) Pieces of clothing.3) Footwears4) Hair5) Wristwatches6) Cosmetics7) Socks8) Books and Magazines9) Under wears..etcUSAGE:1) Open the invoice pocket.2) Insert invoice slip3) Make sure invoice is inserted properly.4) Open bag5) Insert item to be sent.6) Carefully lift flap gum cover7) Straighten bag8) Flip the flap to the front?9) Press fingers on the flap, ensuring it is airtight closed.