C5 White Paper 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 Red, White, Black, Blue, Pink and Purple. Our Black paper envelopes come in packs of 25, 50 & 100.Our envelopes are cheap in price but not in quality or durability.