'The Four Immeasurables', Love ('Maitri'), Compassion ('Karuna'), Joy ('Mudita') and Equanimity ('Upeksa'), is a Tibetan vow that encourages us to focus our attention on helping others. The vow is engraved in Tibetan on a sterling silver disc, measuring approximately 3/4" in diameter, and hangs from a 16" or 18" silver chain with a silver lobster claw closure.