Polyolefin shrink film is very strong film. It has very high resistance to tear and wear and it works well with both regular and irregular shaped products. At the same time, it is soft and flexible. Because of its softness and flexibility, polyolefin never gets complains as crispy or brittle. Polyolefin is made of poison free FDA approved materials, polyethylene and polypropylene, for food packaging. It has no smell, no odor at all. Unlike PVC, which stands for Polyvinyl chloride, Polyolefin shrink films do not have any chlorine, therefore, they do not produce hydrogen chloride gas when heat sealed. Hydrogen chloride gas is where odor smell come from when heat seal PVC film or bags. That is why proper ventilation is needed when heat shrink and seal pvc shrink products.