Perfect Size:The bubble mailers have an external dimension of 6 x 10 inches and an internal dimension of 6 x 9 inches. With 50 mailing envelopes per pack.The lightweight design reduces transportation costs and can be used for packaging and shipping cards, jewelry, cosmetics, photos, etc., making it ideal for the packaging needs of small businesses. Sturdy and Durable Construction:Our bubble mailers 6x10 are made of high-quality materials (polyethylene), which are waterproof, cushioned, tear-resistant, and puncture-resistant, with reinforced and sealed edges. Even in rainy weather, they ensure your valuables arrive safely at their destination. Strong Self Sealing Adhesive:Our Bubble envelopes is using four-season adhesive, which can maintain strong stickiness throughout the year, even if the weather is very hot or cold.The adhesive surface is covered with a silver strip; simply tear it open and fold it to securely and firmly seal each package. Privacy Protection: These padded envelopes are lined with an opaque film, so the contents inside the bubble wrap cannot be seen even under strong light, thus protecting your privacy. Better service：Your satisfaction is our first priority, if you have any questions about our products, please feel free to contact us.Our service team will respond quickly to your problems within 24 hours. Our bubble mailer come with sealing tape, simply remove the protective strip, fold the lid, and press the seal. Strong adhesion force, not easy to tear open, no tape or other packaging materials.