AKG isn't the only manufacturer who can rack off dozens of different models: Sennheiser is playing the same game with its own bundle of entry-level headphones.  The MX 260s come near the bottom of the list.

Cheap Grey and No Accessories
It's hard to find anything positive to say about what's on the outside of the MX 260s, as there's nothing in the packaging other than the headphones themselves and the foam pads to cover them.  The headphones themselves are finished in a very plastic-looking silver-grey, which is anything but classy.

Audio Quality: Jumbled, but Well-Balanced
Like almost every other pair of entry-level headphones we've tested, the MX 260s can't manage to produce a clear sound.  Music sounds foggy, with different tracks getting mixed up and distortion very present.  Trying them with cymbals quickly showed that they struggle with high notes, and they don't do very well with the bass, either.  In fact, the sound is in general pretty even, without ever actually being good.

The MX 260s are a perfect example of headphones at this level: with neither good nor bad audio quality and looking neither too ugly nor too stunning.  It's hard to find plenty of praise for them, but they're not bad headphones in themselves.  There are plenty of worse options, but you don't have to look much further to find something better.