General view of a promotional gift box containing assorted Dow plastics products, including Saran Wrap and Handi-Wrap sandwich bags. Initially developed for the U.S. Army to wrap arms and equipment for transport during World War II, saran plastic was subsequently developed and marketed as Saran Wrap for household use. Introduced in the 1960's, Dow Handi-Wrap was an economy plastic wrap specifically marketed for use in lunchboxes and for its ability to keep food fresher for longer periods of time relative to other plastic wraps.