Your big dog deserves a collar as sturdy and formidable as he is! The Macho Dog® Double-Ply Dog Collar with Roller Buckle offers heavy-duty strength for extra-large dogs. It's got two layers of durable nylon sewn together, plus it's extra wide in the middle (hound-style), all of which reduce stress on the buckle, making it less likely to break. Perfect for dog parents who use a tie out.