XXl, brownI bought an American made dog collar for 3 times the price and this one beats it in quality and material hands down! The construction is flawless and the leather is as soft as a fine wallet. The solid brass hardware feels substantial, not plated. Frankly, I would only expect this level of quality from a custom leather shop costing a lot more. I have a Great Pyrenees and the adjustable XXL collar size up to 27 inches. It would be great if they make one up to 34 inches to fit giant dog breeds. Overall, I would treat this like a fine leather belt of a dog tag collar that could be wared comfortably 24/7. It is not suitable for a working dog that runs into water. I would also not use this collar with a large, strong puller of a dog during walks as it is not made of thick cowhide leather. Buy this collar for the refined leather and comfort for the dog.I am very impressed by Weatherbeeta with this collar. Will buy from them again and again.