Actually it's used upsidedown as a spreader on the top end of your outside telescoping flagpole. You simply drape a cheap plastic tarp over it of whatever color matches or accents your RV's exterior or decals and it's main purpose is to keep the American flag dry in the rain so you don't have to keep taking the flag off and putting it back on the pole when the rain ends.
Saves a lot of time and the dripping mess in your RV or your storage compartment. Hint! If you use a clear transparent tarp, you can still see the flag and it keeps it clean too! The lasting benefit is not letting the wind whip and fray the ends of the flag, so it's a money saver too. win, win, win
Whoops, time to get back on my meds. I forgot to take them yesterday...