Jumbo bags, also known as FIBC's or Flexible Intermediate Bulk Containers. Jumbo bags are made of polypropylene (plastic), and the polypropylene is woven to create a long lasting, durable product. These bags are very strong and have lift straps affixed to the top of the bag. This enables the handling and movement of the bag when it is loaded, as they can be picked up using standard forklift forks and some of the bags offer the ability to empty the contents from the bottom of the bag. Other jumbo bags can be emptied using specific equipment. Jumbo bags typically have a 2000 to 3000 lb. weight capacity per bag, with actual weight capacity per bag typically at 4 to 5 times the posted capacity.