The multi-funcitonal SPIbelt is a stylish and functional addition to your athletic activities. Its sleek appearance and expandability make it the perfect accessory to hold your music player, phone, keys, or energy packets while you run, walk, bike, and work out. Also, it is adjustable to fit waists 24 in to 40 in plus, and it will NOT bounce, ride, or shift while running or doing other activiites. The SPIbelt is also a great travel accessory to hold your money, passport, and other valuable items. Makes a great gift!