Home made ski crampon or Harscheisen for the NTN freeride binding
Built these puppies a couple of years ago as I was worried a trip to the alps might be crap without a set of Harscheisen, didn't use them much but when they were needed they worked ok, although a little too wide so you couldn't follow in other peoples tracks.
It's a simple solution and works well might have to go into production!
http://www.g2outdoor.co.uk/winter-activities/telemarkLabels: harscheisen, harscheisen ntn binding, NTN binding, rottafella ntn harscheisen, ski crampon, ski crampon for ntn