With these luminescent, shimmery, metallic finish envelopes, your DIY invitations and cards will definitely grab the attention of your guests and customers. These 5.5 inch square envelopes are just the right size for your next square project. Choose from 22 elegant colors that range from rich and classic to bold and bright at a discount price. These 80 pound text weight envelopes are superior in quality and have a beautiful iridescent finish. Curiously unique!