We have two different types of shrink wrap film depending on your application. Polyolefin is usually soft; if you squeeze a piece of it in your hand, it's soft like Saran wrap. PVC, on the other hand, is crinkley like cellophane. Our polyolefin films can be used for any application including foods. The PVC film we have is rated for indirect food contact. The higher the guage, the thicker (and most of the time, stronger) the film. So use 100 gauge for heavy duty wrapping applications. 60 guage or thinner can be used for less demanding applications such as tamper proofing software boxes.