Introductions:high-quality hot-melt adhesive self-adhesive sealing tear resistance to ensure the security and privacy of mail products. Squeezing the bubbles with your fingers will obviously swell and the bubbles will be full which will help improve the security of the courier package. The widened side seal makes the package more secure and ensures that the bag will not cause you damage due to the edge opening. The high-quality white pearlescent film on the surface layer brings you a better experience and the effect of protecting the interior of the bag from rain. More advantages can not be told out until you have used it features:1. Made from polyethylene entirely recyclable2. High slip lining allows easier product insertion and extraction increasing productivity3. Self-seal closure tamper-evident increases content security4. Bubble lining provides cushioning to reduce shipping damage5. Polyethylene exterior improved strength provides better protection than kraft mailers6. White outer shell clean appearance is aesthetically pleasing7. Labeling adheres easily is ideal for promotional mailings8. Usps ups dhl and fedex approved9. Superior quality at a unbelievable pricespecifications:1. Material: plastic2. Weight: 6.2Lb 2.8Kg3. Dimensions: 000 4 x 8 00 5 x 10 0 6.5 X10 cd 7.5 X 8 1 7.25 X12 2 8.5 X12 3 8.5 X14.5 4 9.5 X14.5 5 10.5 X16 6 12.5 X19 7 14.25 X20 package includes:100 x bubble bag