These simple yet effective white, card backed envelopes afford your documents the best protection during postage. The strong 650 gsm board back keeps your documents flat & offers excellent protection against creasing & tearing. Each card-backed envelope is printed with the words "PLEASE DO NOT BEND". The white paper front is manufactured from 100 gsm paper. These printed envelopes are ideal for posting flat items that need to remain uncreased. Use this product for documents, cards, files, certificates, magazines & much more. The white paper creates an attractive finish to this board-backed envelope & makes it absolutely ideal for when appearance of your goods is important. Each board-backed envelope has a self-seal adhesive strip for quick, efficient & secure closure. Sold in packs.