<p>The Curogan Prong Collar from Herm Sprenger is made from a nickel-free copper-tin alloy, so it is a gentle option for dogs whose skin reacts to standard metal collars. Nickel is a common trigger for contact irritation, and Curogan removes it while keeping the same ULTRA-PLUS design we use and coach.</p>
<p>The center plate spreads pressure evenly and relieves the throat, so communication stays clear and the fit stays humane. Curogan also stains light coats far less than steel, which makes it a strong fit for white and beige dogs. It will not rust, though the alloy darkens over time with outdoor use, which is cosmetic.</p>
<ul>
<li>Nickel-free copper-tin alloy for dogs with metal sensitivity</li>
<li>Hypoallergenic and gentler on reactive skin</li>
<li>Stains light coats far less than steel</li>
<li>Center plate spreads pressure evenly and relieves the larynx</li>
<li>Rounded prong tips and adjustable links for a precise fit</li>
</ul>