Coastal Pet Herm Sprenger pinch dog collar is an effective dog training tool. It is designed to distribute correction pinch-pressure evenly around your pet?s neck. If you find your dog is becoming aggressive while walking, it is a worth purchasing tool for you. This high-quality, steel chrome plated collar is quite safe with proper use. Moreover, it features safety ends for the safety of both you and your pet. Use a moist cloth to clean it.