This supermarket bag is called a roll bag.

Rolled bags are commonly found in supermarkets and are used to weigh fresh food such as cooked food, fruits, rice and noodles. The setting of the rolling bag makes it convenient for customers to take it by themselves, but it is usually tied with a rope to prevent some people from "picking it up" endlessly.

Rolled bags have the advantages of convenience, cost saving, environmental protection and health, improving brand image, and improving brand image. But at the same time, there are also shortcomings such as insufficient sealing and insufficient sealing.