The sleek chord-like structure is completed with rust-proof nickel-plated hardware. This ensures it will look nice and new for a long period of time as it is being used. This designer collar comes in 9 different sizes for different breeds or animals. Extra Small (8”) is perfect for Teacup breeds, Puppies, Kittens and or Cats. Small (10”-12”) best matches to Yorkies, Chihuahuas, and Mini Dachshunds. Medium (14”-16”) can be used for Jack Russells, Shelties, Pugs, Cocker Spaniels and adolescent Goats. Large (18”-20”) best fits Labradors, Dalmatians, Rottweilers, and Collies. Extra Large (22”-24”) works for Great Danes, German Shepherds, Saint Bernards, Bernese Mt. Dogs, and Goats.