16” Small 2.25mm Herm Sprenger Curogan Prong Collar with Quick Release

WITH QUICK RELEASE | Max neck size 13"

Curogan is a copper-tin-alloy with a high copper portion and some additives which make the material strong - but without any nickel.

More often nickel is responsible for allergic reactions of sensitive dogs and causes of some skin rashes. Herm Sprenger advises that the Curogan will NOT rust because it is a copper/tin alloy and does not contain any iron, and only iron can rust. Curogan will darken and tarnish when exposed to the outdoor environment.