Size 2 (MJ2) MailJacket™ cardboard capacity mailers are boxed in 100s and are best suited to A4 books, thick smaller books and other similarly sized items. An opening on the long edge combined with a smooth card interior, peel and seal closure and perforated ripper strip for easy opening make MailJacket™ extremely fast to pack saving you time and increasing the efficiency of your packing process. The MailJacket™ fits through all UK and European letterboxes reducing returns, damage in transit and postal costs by ensuring that your items qualify for lower-cost postal services. These cardboard capacity mailers are manufactured with 400gsm, 610micron, 100% recycled solid board with pre-creased capacity folds allowing them to expand to fit a variety of items whilst maintaining a snug, rattle-free fit to help your products arrive safely and in good condition.