Many people like to show pride in their nation by wearing a United States flag on their jacket. The Flag Patches category has a large number of different flags, including different variations of the US flag (standard, faded, reflective, etc.). Some people like these variants, especially the reflective one, but some people prefer a simple, regular flag. For these people, the US Flag Black Border patch is absolutely perfect. It's a standard US patch with a thick black border, exactly like the description says.
A lot of bikers incorporate US flags in their biker gear, but many others wear the stars and stripes, too. Former US military members, for example, are very patriotic. So are a lot of police officers and firefighters. Even those who do civilian work for the government or work for an agency like the CIA might want to wear one of these flag patches. Of course, you might just be highly patriotic. That's fine, too.
Why the thick black border? It was added to this patch in case you wanted to put it on a leather jacket or vest. You can't iron this patch onto leather because the heat-activated adhesive can ruin the material, so it must be sewn. If there wasn't a black border, you would have to sew directly on the red and white stripes and the blue star area. Whatever color thread you selected would show up on one of these colors, giving the patch an odd look around the edges. With the black border, you can use black thread and it still looks great.
The American flag patch measure three inches by two inches, making it the perfect patch for a jacket sleeve or for sewing/ironing over a front shirt pocket.