Ensure that the Subway group, AKA "Subway Restaurant Franchise" either changes the name of their famous trademarked "footlong" sub to provide the consumer with an accurate description of the product, OR ensure that their "footlong" sub is indeed a minimum of 12" LONG or more prior to public sales & distribution.
Footlong means the minimum length must be 12 inches, just as a one pound loaf of bread must weigh a minimum of 16 ounces. Fine print disclaimers should not excuse Subway for claiming that a process variation precludes them from delivering an accurately advertised product to the consumer.