This dog collar is available in two sizes, M and XL, with multiple size options to meet your different needs. Crafted from high-quality iron, the collar is not only sturdy and durable but also boasts excellent waterproof and rust-proof performance. For added comfort, it comes with a comfortable rubber sleeve that provides a pleasant touch, making it easier for your dog to accept. You can choose the product specifications and sizes based on your needs, and you can add or remove individual chains on the dog's buckle ring as needed to ensure the product fits your dog's neck size perfectly.