A flexible intermediate bulk container (FIBC), jumbo, bulk bag, super sack, or big bag, is an industrial container made of flexible fabric that is designed for storing and transporting dry, flowable products, such as sand, fertilizer, and granules of plastic. FIBCs are most often made of thick woven polyethylene or polypropylene, either coated or uncoated, Its capacity is normally around 1,000 kg or 2,200 lb, but the larger units can store even more. A bulk bag designed to transport one metric ton (0.98 long tons; 1.1 short tons) of material will itself only weigh 5–7 lb (2.3–3.2 kg). Transporting and loading is done on either pallets or by lifting it from the loops. Bags are made with either one, two or four lifting loops.