4-Panel bag
4-Panel
bags are constructed with five main body components (4 side Panels + Base).
When filled, a 4-Panel bag will hold its square shape similar to other
construction types. Typically, 4-panel bags will hold their shape better than
the U-panel bags, and U-panel bags will hold their shape better than a Circular
bag. Due to the large amount of stitching required, a 4-Panel bag has a greater
opportunity to fail at the seams and is prone to sifting. Nevertheless, 4-panel
bags are ideal for storage due to the way they hold their shape when filled.
4-Panel baffled bags are very common bag style.