Size 194 (MJ194) MailJacket™ cardboard capacity mailers are boxed in 100s and are best suited to medium-sized books, DVD box sets and other similarly sized items. MailJacket™ is optimised to fit through all UK and European letterboxes reducing returns and damage in transit. This also ensures that as many of your packages as possible qualify for lower-cost delivery services, such as Royal Mail’s large letter, reducing your company's postal costs. Pre-creased capacity grooves in the 400 gsm 100% recycled solid board allow MailJacket™ to expand to fit a variety of item sizes and ensure a snug, rattle-free fit preventing damage in transit. Finally, long edge insertion, smooth cardboard interior, peel and seal closure, and the perforated ripper strip all make MailJacket™ cardboard capacity mailers significantly faster than other market-leading packaging solutions.