The image shows a stack of polypropylene (PP) big bags, also known as FIBCs (Flexible Intermediate Bulk Containers) or jumbo bags. These bags are woven from polypropylene plastic and are designed for storing and transporting large quantities of dry, bulk materials. They are commonly used in various industries, including agriculture, construction, chemicals, and food, for items such as grains, sand, fertilizers, and plastic pellets.