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"x 6.25" Smooth 80lb Heavy Weight White 12pc- Includes 12 blank cardstock cards and 12 white envelopes. Each cards has a smooth surface.