Alu foils are fragile and are sometimes laminated with other materials such as paper to make them stronger and more useful. Aluminum and paper a prefect pater in Burger wrapper . Aluminum side protect the liquid coming out, the paper side keep warming and avoid scald. No more leakage and keep the burger fresh. Different size available, colorful available for seasonal and festival. Great choice for both catering and home use. Foil Burger Wrappers Burger WrappersFood Service Wraps manufacturers website:http://www.uniriverind.com/food-service-wraps/