This type of FIBC is generally used in general purpose of bulk packaging and is the most widely used FIBC. These bags have a comparatively better stability and stack-ability.

These bags are either made in U+2 Design or also referred as U-Panel Jumbo Bags, U-Panel Bags or in 5 Panel construction. The four loops are fixed in the corners by over-lock sewing, chain sewing, or with a combination of both. The long seam at the edge of the bag gives a very good load distribution and gurantee high tenacity.