High quality materials: Our bubble mail outer layer is made of high quality PET material, the inner layer is composed of bubble composite film, and the bubbles are full and tight to ensure product safety. Safety design: water and moisture resistant , non-transparent case, envelope peeling and sealing ensure a secure closure, save time and materials, and protect your privacy. Appropriate size: 150x200mm, the usual size to meet your basic needs, and each bubble bag weighs only 10g, the combination of slimness and protection, reduces postage and reduces your shipping costs. Rose gold will make your product more attractive and stand out from the competition. Cost-Effective: There are 20 bubble mailers in the pack, the envelopes are made by the responsible manufacturer, the production quality is excellent, the bubble bags are durable, easy to write and the Label adhesion is excellent. Product features 1. Self-adhesive seal design, use and tear, simple and fast 2. Strong and sticky, safe and reliable to prevent theft 3. The Bladder is full, shockproof and compressible, reducing the risk of loss 4. waterproof and moisture-proof, more insured, safer when transporting 5. Non-toxic and non-irritating raw materials, excellent stability, harmless to the human body < br> Specification Material: outer PET, inner layer composite bubble film Size: width 15cm, length 20cm, seal 4cm Weight: 10g/pc Uses: jewelry bags, cosmetic bags, gift bags, logistics packaging Package includes 20pcs rose gold bubble mailers