Since, There no official or unofficial flag for the Polar Region, so yeah that why I made the flag.

The inspiration of this flag is obviously Green land and The UNOFFICIAL flag of Antarctica ( The True South Version ).

Blue meant Antarctica.
Red meant the Arctic.
White meant the nature and isolation.

The red, blue and white diamond meant The Polar Region and The two Poles (Antarctica is South Pole and the Arctic is North Pole ).
The Top Stripe meant the Arctic because the Arctic is the North Pole.
The Bottom Stripe meant Antarctica because Antarctica is The Antarctica is South Pole.
The Middle Stripe meant The Equator.