Description:Paper Material: The card envelopes are crafted of thick paper, providing a durable, elegant, and textured look. A good choice of envelopes shows your elegant and gorgeous.Self-Adhesive V Flap: Greeting card envelopes feature a self-adhesive strip that adds water and seals easily without additional glue or tape, making preparing and mailing cards more efficient. Not wrinkle when the invitation envelopes are exposed to water.DIY Creative: The blank envelopes can be a creative process, allowing you to print, draw, or write words you like on the envelope to match the subject. Add a touch of uniqueness to your invitations, greeting cards, or business communications.