The Halti Link has been designed by Dr Roger Munford to use when a Halti is first worn, or as a permanent accessory with over boisterous or aggressive dogs. Some dogs take time to get used to the Halti and there is a small risk that they may be able to back out of the headcollar, pulling it over their head just as with a slack conventional collar. This link attaches the Halti to the D ring of a conventional collar. For Halti sizes 0-2 Approx length 6" (15cm)