The format 3.5 "x 2" is the standard format for this type of product. Base, it is available in print two sides (4/4) or (1/1) on a card of 12pt glossy or matte.
Full Bleed Size (starting document size)
3.75 "x 2.25"
* For best artwork should have the dimensions of the document with full bleeds.
Document Trim Size (final size after being cut)
3.5 "x 2"