Paper Accents Card & Envelope Sets are ready to personalize. Use stickers, rubber stamps, brads, eyelets, buttons, punches, and more. They are acid-free, lignin-free, buffered, and archival quality. 4.25 in. x 5.5 in. Smooth Nature Assorted 40pc- Includes: 40 cardstock cards and 40 white envelopes. Cards are folded and blank inside: 4 each in a rainbow of 10 colors. Each card has a smooth surface.