The Cumberland strip seal secretive booklet mailer is designed for those who need a reliable and secure mailing solution. This heavy-duty booklet mailer envelope is perfect for businesses and educational institutions looking to send documents confidentially. With its easy-open strip on the long side, inserting and removing documents is a breeze, making it ideal for frequent use. The white C4 size (229 x 324mm) ensures ample space for various document sizes, while the secretive pattern keeps contents private and secure. Customisable with your company logo or school emblem, it adds a professional touch to your correspondence. The window feature allows for easy addressing, making it a practical choice for bulk mailings. Whether you're sending important business documents or school communications, this booklet mailer offers the perfect blend of security and convenience
