Beautiful colors using woven fabrics passed down from the Mayan people of Guatemala. Made with a commitment to fair trade. Martingale collars are a popular style because they are easy to train with their soft choking action and are easy to put on and take off. The solid brass rings (genuine brass) that a tail we could wag is particular about will not rust and will maintain their beauty for a long time. Originally, these are collar chokes with a lovely faded look. I used it on a Golden Retriever puppy.