There are 3 basic types of bulk bag construction: U panel, 4 panel and round/tubular. A Baffled is an internal component that can be added to each structure to create a "baffled" bag. More specifically, a baffle is a fabric panel or rope sewn within the four corners of the bag that allows the bag to remain square when full.

Baffled, Formstable, and Q Bag are all terms for the same type of square FIBC.

Without baffles, a standard bulk bag can bulge or belly at the sides when filled. Baffled bags are ideal due to their stability and stackability. They also improve overall storage capacity. The most common type of baffled bag is a 4-Panel baffled bag.

Baffle bulk bags (also known as Baffle FIBC or Q bags) are an ideal way to save money by maximizing the amount of material transported at one time.