CP- MICRO (3/8") / CP TITANIUM MICRO 3/8 Inch Bones Herm Sprenger advises that the

Herm Sprenger advises that the Curogan will NOT rust because it is a copper/tin alloy and does not contain any iron

Aid in digestion

The collars will tighten under pressure and will release pressure instantly

Train your pup to be a good dog or a better dog

CP- MICRO (3/8") / CP TITANIUM MICRO 3/8 Inch Bones Herm Sprenger advises that theMaterial Type: Hypo Allergenic 100% Titanium Many dogs exhibit sensitivity to the nickel in the stainless steel which is observed by a reddening of the skin where the contact points are touching the dog's skin. Our hypo allergenic contact points alleviate this problem and allow your dog to wear the collar without irritation. The hypoallergenic do not contain the nickle that can cause irritation on certain breeds of dogs or dogs with sensitive skin.