A matched pair, mirrored to face opposite directions — the same convention used on military uniforms, where the flag on the right shoulder is deliberately reversed. The practice traces back to WWII paratroopers, who wore reversed flags for identification behind enemy lines; it's now known as "assaulting forward," since a standard flag on that side would look like it's trailing in retreat as the wearer moves. Reversed, it always looks like it's flying ahead.
Sold as a matched pair (left-facing and right-facing) so both sides of a vehicle read correctly. Cut from durable outdoor vinyl, with color and size options. White and lighter colors show best on tinted rear windows. Have a specific request? Just ask — application instructions here.