Antenna placement can vary on certain makes and models so we do not create an opening for the antenna.
Unless you have a shark fin antenna, then we do offer a customized pocket to cover that perfectly.
In the case that you have a stand-up antenna, you would place the cover on your vehicle and mark the area where the antenna should poke through. Next, make a minor incision that is just small enough to let the antenna slide through. With your package, you should have received grommet attachements (see photo attached). Snap the grommets on the area that you made the incision to prevent the cover from tearing open or enlarging the cut.