The Postmaster A4 C4 Do Not Bend Board Backed Envelopes, a premium solution for mailing important documents and materials with confidence. Designed to provide maximum protection, these high-quality envelopes feature a sturdy hard board backing that prevents creasing, bending, and damage to your contents. Perfect for sending important documents such as legal papers, certificates, and posters, these envelopes ensure that your professional materials arrive at their destination looking crisp and intact.

The C4 design allows for unfolded sheets of A4 paper to be securely stored, and with a space-saving compact size, they can be easily postmarked using a single large letter 1st or 2nd class stamp (up to 100g). The clear "Do Not Bend" message on the envelope ensures that postal handlers take extra care when handling your important mail. Made from PEFC-certified sustainable materials, these envelopes not only protect your contents but also contribute to environmentally responsible practices.

Trusted by big and small businesses alike, Postmaster has been manufacturing envelopes for millions of customers across the UK, and now you can benefit from their expertise and quality with this 50-pack of brown A4 C4 Do Not Bend Board Backed Envelopes. Say goodbye to damaged documents and compromised professionalism, and hello to superior mailing solutions with Postmaster.