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 made of thick woven polyethylene or polypropylene, either coated or uncoated. An FIBC 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 pallet or by lifting it from the loops. Bags are made with either one, two, or four lifting loops. The single loop bag is suitable for one-man operation as there is no need for a second man to put the loops on the loader hook. Emptying is made easy by a special opening in the bottom such as a discharge spout, of which there are several options, or by simply cutting it open.

Jumbo bag is eco-friendly. It has two layers that the inner layer is 100% consumable and the outer one is recyclable. In comparison to the new steel drums, its wastage is approximately zero and it doesn’t leak.

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