The SPIbeltTM will expand to hold any smart phone, keys, cash, credit cards, and even a passport. The SPIbeltTM is ideal for fitness, travel, medical needs, and so much more. The SPIbeltTM is sleek, secure, and does not bounce. Use the SPIbeltTM with Waterproof Accessory to keep your important belongings dry and clean in all sorts of wet and dirty environments. The Waterproof LokSak©, a sturdy plastic inner-liner, protects your belongings from the elements.