Which is the front and which is the back? No matter which way you flip these two-sided Christmas cards you'll have something colorful and friendly to look at. And you can choose from red or green stripes! Your photo fills one side, with a simple red or green stripe that runs across it holding your personal message and name. On the back, a bold array of stripes in various shades of red or green holds a larger two-line greeting, which can be edited for the holiday message of your choice. These trendy and timeless Christmas cards allow your favorite picture to shine. Square envelopes are included, but do require additional postage to mail. You will have the option during checkout to choose rectangular envelopes, which do not require extra postage.