The illustration on our Polar Bear Sign is a colorful representation of this large bear in the snow. The 12 x 12 inch sign is yellow and diamond shaped, similar to caution signs on public roadways. The Polar Bear Crossing Sign is made from rust resistant aluminum and is durable and weather resistant. Unless you live up north, you may have less practical need for our Polar Bear Guard Sign, and a more "fun"-tional need. The pre-drilled hole allows for easy mounting in a child's room, out by the snowmobiles, or even by the driveway. The warning sign is an alert to preserve the world of this wondrous creature.