Abstract: A multipurpose mailing envelope which consists of a combination of an outer jacket of biodegradable material such as paper, cardboard or the like, and an inner jacket of soft elastic plastic padding material which stiffens the outer jacket and which is disposed loosely therein. The inside surfaces of the outer jacket and the outside surfaces of the inner jacket are hydrophilic and have adhesion which precludes undesirable slipping during production and/or filling. The outer jacket and inner jacket are easy to dispose of after use and can be easily separated by hand as appropriate to the material involved.