While similar to the many other armbands we've previously seen for the iPod nano, Artwizz's new Sportsband for iPod nano 4G (€17) manages to incorporate a perforated and thus more breathable armband and a Velcro-assisted headphone cord manager into the otherwise familiar neoprene design. A clear front plastic shield protects the nano's face, somewhat impeding Click Wheel access in the process. Reflective and gray material is used to aid visibility…