Holt Head Collar Black Size 3Brand: Coastal Pet Features: \\nWalk and Train Head Halter Collar. Size 3. Black. \\nSize 3 designed to fit breeds like Boxer and Retriever. \\nThe Walk and Train Head collar helps put you back in control of your pet. \\nCalms boisterous animals and simplifies training. \\nWorks on the principle that where a dogs head goes his body will follow. \\n Details: The Holt Headcollar (formally called the Halti) helps put you back in control of your pet.