Common finishes include matte and glossy exteriors (often with matte interiors). Options range from preprinted designs (some with matching printed envelopes) to blank, printable cards designed for inkjet printing.
Sets commonly include matching envelopes (some printed to coordinate with the card) or plain white v-flap envelopes. A few kids’ sets specify envelope weights (one lists 120 gsm).
Printable sets often include envelopes sized for folded 4.25 x 5.5-inch cards. Many 4 x 6-inch cards are sold with matching 4 x 6 envelopes or with standard white v-flap envelopes sized to fit the card.
Some boxed sets are printed on FSC®-Mix Certified paper, use soy-based inks, are produced on chlorine-free paper, and are described as recyclable or made from FSC-certified/controlled materials.
Printable card sets are described as compatible with inkjet printers (including dye- and pigment-based inks). They are designed to print on the exterior and interior and often include prescored lines to fold to standard note-card sizes.
Cards are described as cardstock or heavy paper, typically in the 210–250 gsm range (≈9–11 mil). Envelopes are usually matching or plain white v-flap styles; one listing specifies 120 gsm envelopes.
