Choose from the following options:

One or more colors, single-sided or front and back, (i.e. 1/0 means 1 color on the front, none on the back, 2/1 means 2 on the front, one on the back).

Cardstock is either single-ply, which is a bit thicker than a normal business card but not too thick. Double-ply is a nice thick card. Different paper color and textures can be discussed.