C5 Black Metallic Envelopes are made with high quality 120gsm paper with a peel and seal adhesive to seal the envelope. The envelopes are 162mm x 229mm and will fit an A4 sheet folded in half. These envelopes can be printed using a laser printer. There are more coloured C5 envelopes to choose from. These colours include White Metallic , Black Metallic, Silver Metallic & Gold Metallic . Our Black C5 Metallic envelopes come in packs of 25, 50 & 100.Our envelopes are cheap in price but not in quality or durability.