Zip lock bags is an inexpensive flexible rectangular storage bag, usually mainly transparent, made of polyethylene The bags are made in many sizes; a typical small size is 1.5 by 2.5 inches to and a large size is 12 x 18 inches
Thickness would typically be from 30mu to 100mu
Many such bags are used to contain food, such as sandwiches and freezer storage.
Single and multiple small items for sale are often packed in small zipper bags for convenience and visibility.
Several types of resealable features are available for plastic bags.
Sometimes other types of bag, such as a cloth bag for toiletries fitted with a conventional zip fastener, are described as zip lock or grip seal bags.