In the books
In the Song of Ice and Fire novels, Ibben (also sometimes called Ib) is home to a hardy race of sailors. The Ibbenese principally trade in whale blubber and meat. The island's principal city is the Port of Ibben, located on its south coast. The northern part of the island is cold and sparsely-inhabited. Mammoths are said to exist on the island. The Ibbenese have also colonised several other nearby islands, including Far Ib, and even have some settlements on the remote northern coast of Essos.
Author George R.R. Martin has stated that the island of Ibben is roughly the same size as real-life Iceland.