This listing is for a set of 10 mini envelopes with the option to purchase cards. These envelopes are great for mini note cards, advice cards, best wishes jars, party favors, jewelry packaging and more! Details: -Two Sizes available: 3" x 3" or 2.5" x 3.5" -Flat cards are available at checkout in different colors. -The cards are blank for your personal message. -Envelopes are not self-sealing or mail-able. -These envelopes are hand-made and not self-sealing or mail-able. -A sticker or decorative tape will be needed to seal the flap.