It is a very utilitarian solution if You need an additional closure in Your bag.

On the photos You can see this modification used with Texas and Freaky Black models.

This modification can be added only to selected models. If You want to check if it's possible to add it to the chosen bag, enter the "Accessories" bookmark (under the product's photos, next to the "Description" bookmark) and check if the "Zipper gusset" is available (if so - just add it to Your cart).