As illustrated in the following video, fin seal pouches are primarily manufactured around the product they are designed to protect. IMPAK has a long history of producing pre-printed rollstock to be used with fin seal wrappers like the one below...

IMPAK is a world leader in the production of premade fin seal pouches designed to replicate the appearance of a pouch produced on an automatic fin seal wrapper machine. These pouches come in a variety of colors and sizes and are ideal for packaging everything from candy bars, dried fruit, drink mixes, food bars, as well as trading cards, promotional material, samples and collectibles.