Strong Poly Postal Postage Mailing Bags Self Seal Grey Postal Bags - All Sizes •Lightweight Economy Parcel Postage Mailing Bags are designed to provide security and performance. •Manufactured from 60 Micron Thick lightweight Grey film to provide the best performance while lowering the postage cost.•Hot Melt glue ensure that the package doesn't get opened while in transit.•Once the package is sealed it remains sealed.•Popular among online retailers as well as other businesses for Industrial and Storage applications.•Our Mailing bags are 100% opaque, super strong and thick. .
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