Zips Tummy Buster is nestled within a Poway business park, making it the ideal spot for breakfast and lunch. Boasting "sandwiches so big, they'll bust your tummy," its large-portioned sandwiches, also known as Busters, come in five varieties: Tummy Buster, Steak Buster, Chicken Buster, Pizza Buster and Hunger Buster. Zips also makes its own soups and breads daily.