- Durable, moisture resistant- Exceptional puncture resistance and tear strength - Clean white, aesthetic appearance - Lightweight, saves on shipping costs - Strong seals offer superior bursting strength - Reliable, tamper-evident and easy to use closure system - Custom printed graphics with up to four ink colors on two sides available -Grey white Poly jackets are available in different sizesPolyjackets are made from durable, moisture resistant co-extruded polyethylene. They are constructed with a bottom fold and strong side heat seals for superior bursting strength and our pressure sensitive self-seal adhesive closure system is reliable, tamper-evident and easy to use. Ideal for clothing, soft goods, documents, parts, and pharmaceuticals.