The Blue Line is the term used in New York state for the boundaries of the Adirondack and Catskill parks. It is so called because blue ink was used when they were first drawn on state maps. That started a tradition that persists to this day. We created this key tag to honor that tradition and express our love of New York's beautiful parks. Adapted from classic hotel-motel key tags this traditional plastic tag measure 3.75" x 1.75" and comes with a metal c-ring and split ring.