These Manilla Do Not Bend Envelopes are 241mm x 178mm and are idea for mailing photo prints, certificates, CDs, documents and other items with the necessary protection from bending and corner damage in transit. These envelopes come in boxes of 125 and are printed with “Please Do Not Bend" on the front. The envelopes themselves are manufactured with a strong 120gsm manila paper attached to a rigid 600gsm cardboard backing sheet which prevents bending, folding and corner damage in transit. Secure peel and self-seal closure makes for faster packing and flat packing in high quantity boxes helps them arrive with you in excellent condition, store well for longer and allows you to stock high quantities of board backed envelopes in minimal space.