Ruff n' Tuff Dog Collar in Black Ruff n' tuff collar features a striking glow-in-the-dark, biker-inspired design on durable nylon Ruff n' tuff collar makes any pet the "leader of the pack" Biker-inspired design helps keep dogs safe during walks, while showing off a unique style Feature quick-release buckles with a nickel-plated d-ring Measures 5/8-inch length; fits 10-inch to 16-inch dog necks