General description With an intertac closure method, you can seal and re-seal Q-Connect Orange C4 Internal Mail Envelopes several times without any difficulty. Perfect for work that needs the signatures of many people or cards for office birthdays. Printed with address boxes, it is easy to send the envelope from person to person in a clean and obvious manner. Each envelope is made from high quality 85gsm paper, adding protection to your contents. Technical specifications Size: C4 Weight: 85gsm Pack quantity: 250