25/50Pcs Bubble Mailers Padded Envelopes Lined Poly Mailer Self Seal Pink Specification:Quantity: 25pcs/50pcsColor: Pink/blue/black/white/light pinkSize:(11x15+4)(13x15+4) (15x18+4) (15x20+4)(18x23+4)(25x30+4) cm.Material: New material PE + Pearl filmContain:25/50pcs Bubble Padded Envelopes There are 2 sides borders (0.39''/10mm each)Example:Like the size 11x15cm, this is the external sizeSo the inner size of this size should be: 9x15cm (3.54x5.91in)Flap: 4cm (1.75 inches)At the same time, you have to consider the side thickness of the product you want to pack. If the product you want to pack is 9CM in width, 15CM in height and 2CM in thickness, then you should choose a 13*15CM bubble bag. If you don't know how to choose, Please contact us and tell us the width, length and thickness of the product you want to pack in CM Manufacturer size tolerance +/-0.25"/5mm.Note: Pearl film bubble envelope bag is not a dense and precise instrument. There will be some uncontrollable errors in the size of each batch, the error is about 5MM, if the error causes inconvenience, please understand ~Material: new PE material + pearl film Product selling points:1.These mailers add a po p of color to the mail and stands out from the rest, quite different from the standard one. Your customers will look forward to that charming white envelope in the mail. Those padded mailers are lightweight mailing envelops, will not add to your shipping costs.2.Tear Resistance Envelopes: This padded envelopes are with durable and sturdy surface, work great instead of paper versions that tear with sharp,heavy, or weird shaped products. Also made with multilayered polyethylene sheets, provide an excellent protection for shipment.3.Multipurpose Bubble Mailers: You can use these to mail cosmetics, paintings, fashion accessories, jewelry, medicines, seeds and bulbs, and a lot more. They are padded enough to protect fragile things during shipping. The laminated top allows you to attach self-adhesive stamps and address labels easily.4.Self-Adhering Envelopes: The White poly bubble mailers come with a self-adhesive tamperproof seal. Once the envelope has been sealed, it cannot be opened without visible signs of tampering. The smooth surface of the mailers makes it easy to stick stamps and address labels.