The name Havaianas (pronounced ah-vai-YAH-nas), Portuguese for Hawaiians, was a tribute to America's glamorous holiday destination. The addictive nature of these flip flops is largely due to a 42-year-old secret rubber formula, which makes them butter-soft, bouncy, flexible, and durable. Since being introduced to the United States three years ago, Havaianas have created an unprecedented cult following. And why shouldn't you have them in every color?