From the printer: "Premium Stock. 11.6-pt. thickness, 320 gsm black core card stock from French paper manufacturer Arjo-Wiggins. This silk-finish stock is similar to, but superior to, the stock used on popular trading card games. It's slightly thinner for easier shuffling, but dense to give better rigidity and snap than thicker stocks. It's the best playing card stock we've found."
They are tarot sized. 2.75 in x 4.75 in.
They have rounded corners, low gloss UV coating.