A5/C5 manila board backed envelopes are boxed in 125s and are ideal for A5 sized photos, certificates and documents including, of course, A4 items that can be sent folded in half. These envelopes are manufactured with strong 120gsm manila coloured paper and extra rigid 600gsm backing card as well as being printed with a “Please Do Not Bend” message on the front for maximum protection against bending, folding and damage - reducing returns and keeping your customers happy. Peel and self-seal closure and a flexible opening help make board backed envelopes as fast to pack as possible and flat packing in high quantity boxes allows you to store high quantities of packing materials in minimum space.