Proporta has unveiled its new Sports Armband for the fourth-generation iPod nano. Made from elasticated neoprene, the Sports Armband features a built-in protector for nano’s face, including the screen and Click Wheel, an integrated pocket for small items such as a house key, an armadillo print design, and is both washable and water resistant. Proporta’s Sport Armband for iPod nano 4G is available now and sells for $13.