Very lightweight, secure way to carry your iPod nano on arm or wrist. Yes, the AeroSport can also be used as a wrist strap. Due to the length of the elastic arm band, it will cover the nano if you wear it on your wrist, but that adds extra protection if you want wear it that way. I do. A lot.
The velcro attachment allows precise adjustment of tension, the snap frame for the iPod nano is tight and secure, and the straps mesh material allows good air flow. Good design, solid value.