Metronic 6x9 Inch Poly-Mailer Black Envelope Shipping Bags Self Sealing Envelopes Boutique Custom Bags Enhanced Durability Multipurpose Envelopes Keep Items Safe Protected

【Special Color】These poly mailers were black outer surface, grey inner lining,so it looks brighter than others.Make your package more attractive to customers and more mysterious.

【Absolute confidentiality】Tear resistance self sealing envelopes,strong viscosity,improve your package security. These poly mailers were white outer surface, black inner lining, so it looks like light grey color not a true bright white.

【Durable Protection】Metronic shipping bags made by six layers membrane,can be streched 3 times longer than normal,keep your product in good condition.

【Waterproof Bags】Waterproof poly mailers keeps your gifts as good as new even if they get left out cold in the rain.

【Great Value】Metronic poly mailers bags are 2 mil thickness for shipping soft-goods,and they are light enough to safe you some money on weight for shipping.