Can play a major part in the quality of your pet's life. It contains two powerful half inch neodymium magnets within the fabric of the collar. The longer the collar is worn the greater the benefit will be from the magnetic fields. Using technology developed in the USA Norstar has been developing natural biomagnetics field therapy to help improve health and alleviate pain in both humans and animals. Used by vets and animal owners alike to increase energy, to generally improve overall health and improve well being.