Paper Envelope 2.5″ x 4.25″, 25 Envelopes Per Pack is made of brown kraft material to protect documents from spillages. It is suitable for using it with greeting cards, invitations, weddings, or any announcement.. Material: Kraft. Dimension: 4.2″H x 2.5″W x 0.1″D.Features: Perfect for Greeting Cards, Invitations, Weddings or any Announcement