Sewn Open Mouth (SOM) bags

These bags, as the name suggests, are open mouth bags, which utilize sewn closures for both the top and bottom. Typically gusseted, this flush cut bag has a factory-sewn end. The SOM's flush cut feature makes it one of the most economical styles of the multiwall bags due to the fact that it allows for more efficient manufacturing on less expensive equipment. Since the bag length can be trimmed it permits use with products that have fluctuating densities.

Though this bag is not classified as sift proof on its own, tape and filler cord can be placed over the sewing, keeping sifting to a minimum.