For use with the BODYBAG by FLatline Ops. Add the BOOSTERBAG core for more unlimited heights. The DIRTBAG provides the same positions as traditional rectangular bags, but we’ve added the extra top flap for even more positions than before. The HOOKER is a military style nylon strap with high density Velcro and snap hook for easy attachment to any Flatline Ops shooting bags. It conveniently allows you to hang your Flatline Ops bags in any environment.