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C5 size envelopes are able to fit a once folded A4 piece of paper or an unfolded A5 sheet of paper. The affordable C5 envelope features a handy A Window (45x90mm) which is positioned at 20mm, 60mm up from the left, which will neatly fit your address label - perfect for general, everyday office use. The Pocket style means documents are horizontally slipped into the envelope and sealed easily and securely due to the self seal flap. Pack Size: 500 Colour: White Paper weight: 90gsm Size: C5 (229mm x 162mm) Self Seal - Flaps right Pocket with A Window (45x90mm)