EXCELLENT MATERIALPack of 100 plastic bags with adhesive closure which are stronger than conventional envelopes, the polyethylene plastic film of these tear-proof bags gives them superior resistance to moisture and tearing.plastic bags with adhesive closure which are stronger than conventional envelopes. . ATTRIBUTESIZE OF SHIPPING PACKAGING BAG - 30 42 cm / 11.8 "x 17", it can load most books, clothes, Christmas gifts, candy bags and various non-fragile products. OPENING LENGTH OF SHIPPING BAGS 4.8 cm / 1.9 ", a sealing strip with super strong adhesion, which can not be opened easily after sealing, ensuring safety. . PERFECT FEATURES Parcel envelope is waterproof, tear-proof, good toughness, not easy to break. Can support a weight of 3-4 kg. Envelopes made of 100% recyclable plastic, safe for the environment when incinerated (no toxic gas emissions). . STRONG TEAR RESISTANCE Plastic film of the envelopes in 60 thickness and reinforced welds to avoid the risk of bursting. Lightweight