The Hilo Zipper Pouch Insert fits inside our Hilo Runner as well as the Hilo Expander Pocket and creates an entire end to end enclosed zipper pouch.  This is not just a zipper top but a complete standalone zipper that turns your empty pocket into a zipper pocket or can be used standalone when removed. The Zipper Pouch will also fit inside any pocket that has Velcro on to attach the insert into.