Listings show standard 3" x 5" and 3-1/2" x 5" formats (often listed as 3 x 5 and 3-1/2 x 5).
Options include matte, glossy, uncoated, and textured finishes; one listing specifically notes a glossy front with a matte back.
Many printable notecards are described as compatible with both laser and inkjet printers and support two-sided printing and print-to-the-edge/full-bleed printing.
Some printable sheets use precise micro-perforations for clean separation, and certain flat cards are offered with rounded corners.
Options include unbound loose cards and ring-bound sets that feature a poly cover and an elastic band to keep cards together for quick flipping.
Some packs include envelopes, and certain sets advertise a poly cover or other packaging accents; one listing explicitly includes 50 cards and 50 envelopes.
Materials include cardstock/paper (e.g., cardstock at about 100 gsm) and plastic/poly components for ringed sets (polypropylene and metal ring components).