A few key reasons help explain Rainbow's popularity and raving fanbase over the decades. For one, celebrities like Bob Marley, Keanu Reeves, and Jerry Garcia wearing the sandals boosted their cultural appeal enormously. And word-of-mouth about their durability and custom molded comfort keeps demand strong generational. The extensive style variety allows major personal expression today too. Ultimately their premium quality and branding seeded a passionate lifestyle community that still thrives today.