a tail we could wag is a manufacturer, considered the originator of the so-called Maya collar, which uses tape made from beautiful woven fabrics passed down from the Maya people of Guatemala. Known for its rough texture and sturdy construction, it's a long-selling product even for bad tails. Martingale collars are a popular style because they provide soft choking for easy training and are easy to put on and take off. a tail we could wag's solid brass rings (genuine brass) are made to last and maintain their beauty without rusting. I used the color chalk, which has a lovely faded look, on a Golden Retriever puppy.