Finely textured envelope. Color variations may occur. A classic white envelope for all your greetings, invitations, and congratulations. When was the last time you wrote a handwritten letter, placed it in an envelope, and sent it to a loved one? If it's time to slow down, grab a pencil, ballpoint pen, or marker and write from the heart. A friendly greeting or congratulations is perfect for sending in the envelope. The white envelope is the classic holder for a personal card or invitation you want to send to a loved one. Trim 1 cm from the cardboard circumference to ensure it fits snugly inside the envelope.