SanDisk Sansa e250 e260 e270 e280 Premium Silicone Skin Kit - Belt Clip - Sports Armband - 7 Color Options, BLUE+ARMBAND
Serves its purpose.  No bells or whistles, simply a silicone case for your sansa.  It's o.k.  I found a nicer one at Best Buy that's leather, so I no longer user this one.