Our North Dakota Information Map Magnet measures approximately 6 square inches and has a thickness of 0.1". This Classic North Dakota Information Map Magnet is perfect for any refrigerator or metal surface and makes a great gift or souvenir! Like all of our refrigerator magnets, this North Dakota Information Map Magnet is made of flexible molded rubber and is extremely durable. Plus, all of our magnets are 100% made in the USA.