Food storage and mylar are two terms that go side by side. People who purchase certain food products like wheat and rice in bulk make use of mylar in storing.
Many cannabis users also have a strong bonding with mylar. Weed smokers usually purchase buds in a large amount, which cannot be placed in a random container for storage. There must be a specialized bag that would keep its flavor intact. And that bag is a mylar bag.
Dispensaries store cannabis in these bags. This way, products stay fresh for a long time.