With Paper Accents Card & Envelopes Sets are ready to personalize. Use stickers, rubber stamps, rub ons, brads, eyelets, buttons, punches and the list goes on. They are acid-free, lignin-free, buffered and archival quality. Cardmakers Choice 100lb Black 20pc- Cards are scored and ready to fold to 4.25"x 5.5". 20 heavyweight 100lb cards and A2 white 80lb envelopes.