A large selection of Our grey mailing bags, all fully opaque and 60mu in strength with 40mm peel & seal lips. the self-seal lip make the parcel air tight and water resistant for personal and business use These Grey plastic mailers have a sticky strip for easy closure. Once sealed, these bags are very hard to open allowing your items to arrive safely without risk of opening or tampering postal bags are lightweight yet strong. The grey bags are made from polythene, a high-quality material that ensures strong water resistance and is tear-proof. It can securely protect the items from dirt and moisture These grey plastic bags can be used in any Courier. Suitable to ship any item, the bags will protect your privacy with a professional look. Light and durable, our mailing bags offer a cost-effective method of sending goods; from clothes to books and documents Pack Size: 50 bags of 10x14 Inch (250x350MM)