http://www.amazon.com/gp/product/B005FVNGRS/ref=as_li_qf_br_
Ideal Music Player for Exercising and Commuting
The Sansa Clip Zip was designed with active music listeners in mind. It features a unique clip design: the back panel of the device closes on a hinge, and can firmly fasten to a backpack or article of clothing. This makes it an ideal accessory for joggers, athletes, and anyone else who wants to enjoy music while on the move.