Motorola armband for the ipod
I dont have my DX yet to verify, but measuring the case itself, it should hold an item that is 5.5 inch tall by just under 3 inch wide and with elastic sides and a velcro top can be adjusted down easily. Has worked great holding my ipod classic during workouts, expecting the same great results with my DX assuming it really does fit.
I have that one, and it doesn't fit the DX well, at least not without stretching it, and that's without a case. In 4 months time, I have worn it out to the point I had to repair it (sewed it bk together and had to replace the velcro that the flap uses to close it). I work in a warehouse so it's not a big deal for me, but i would not recommend this to anyone else for a DX. D1, D@, D2G, sure. It fits them without stretching and with a case on.