8 Canvas Corp. Black & White Zebra ATC Size Gift Cards & Envelopes. They measure 2 1/2 in. x 3 1/2 in. and are perfect for creating Artist Trading Cards! You can decorate the front and add a note inside, or decorate the inside and outside of the card. Then place it into the envy when you're done - Who won't want to receive an ATC like this! There are 8 - 2 1/2 in. x 3 1/2 in. folded cards and 8 white envelopes.