Mini envelopes are great for thank you note, greeting card, business card, birthday, weddings, parties, anniversary, invitations, holiday, different sorts of events and more.SpecificationColor: BlackMaterial: PaperStyle: RectangleThickness: 0.5mm / 0.02 inchOverall Dimension: 17.5 x 12.5cm / 6.9 x 4.9 inch (L*W)Package Content: 50 x Mini EnvelopesAdvantagesMade of durable and sturdy paper in fine texture, smooth to write, and not easy to fade. The blank surface of envelope allows you to write, draw or print the words of what you want.InstructionEasy to use: Insert the cards into envelope, then fold the closure and put the glue or sticker on it to increase the closure tightness.NoticePlease kindly note that this mini envelope does not include glue.