The pouch bags are made of PET and PE material. Zip closures and tear notches are available on each of these stand up pouches giving them a resealable feature. These food-grade pouches are designed for packaging and displaying various food and spices including all kinds of nuts, dried fruit, candy, cookies, tea, dried foods, snacks, beans, seasonings, grain, jerky, confections, toffee, chocolate, herbs, and more. Available in many sizes.