This rolls material is designed to be used on virtually all vacuum sealing machines. Excellent for freezing fish, meats and many other items. This rolls material will seal out freezer burn and extend the life of most foods in the freezer as well as the refrigerator or even dry storage. These vacuum rolls are all clear, they have micro channel pattern, one side smooth, second side rough. They can be used for multiple household uses. They are FDA approved, BPA free.