Use PJ6 Opaque Poly Mailers to send bulkier clothing items, prepackaged boxes of electronic goods like mobile phones or tablets or multi-item orders, with a capacity of 335mm x 430mm this larger poly mail bag is a packaging staple for many online retailers. We use a robust 75 micron white polythene to ensure our mailers are tear and puncture resistant, and seams are heat welded for a waterproof seal. Poly Mailers are quick and easy to pack, simply slide in the required items and securely seal the package with the self-adhesive strip provided. Because each PJ6 mailer weighs just 15g you get reliable protection for items in transit without adding to your postage costs, economical and highly effective!