21″ fits 14″ - 21″ necks; 18″ fits 12″ - 18″ necks Includes a custom brass name plate- see details for customization instructions Made of poly coated nylon that is waterproof and odor resistant Has a D ring and O ring for clipping a lead to Ensure your dog’s safety and style with the Outdoor Dog Supply 1" Reflective Premium Waterproof Dog Collar, a durable and customizable collar crafted from waterproof, odor-resistant poly-coated nylon. Featuring a reflective strip for enhanced visibility during nighttime walks, hunting, or training, this collar is perfect for medium and large breeds in any adventure. Order your custom reflective dog collar today! Key Features: Material: Premium poly-coated nylon, waterproof, odor-resistant, soft, and easy to clean (wipe with a damp cloth or sponge) for lasting performance. Reflective Strip: High-visibility center strip ensures safety in low-light or nighttime conditions, ideal for evening hikes or urban walks. Hardware: Nickel-plated D-ring near the buckle and center O-ring for versatile leash attachment, perfect for training or outdoor activities (not intended for saltwater or chlorine use). Fit: Tight hole spacing ensures a secure, adjustable fit, ideal for active dogs in any environment. Durability: Engineered for tough conditions, this reflective collar is proudly made in the USA with superior craftsmanship. Sizes: 18 inch: Fits neck sizes 11” to 18” 21 inch: Fits neck sizes 14” to 21” Measurement: From the center of the buckle to the last hole. Customizable Brass Name Tag Material: 3/4” brass, rust-resistant with raised lettering for clear, long-lasting readability. Customization: Up to 4 lines, 18 characters per line for personalized dog identification, perfect for safety and style. Allowed Characters: Letters: A–Z (uppercase only) Numbers: 0–9 Special characters: – , . / ' & @ $ ( ) : " + Breeds given for reference for sizing guide. We also recommend measuring your dog's neck. Medium Dog Breeds (Avg. Neck Sizes 12”–18”): Beagle: 12”–16” Border Collie: 12”–18” French Bulldog: 12”–18” Jack Russell Terrier: 12”–16” Shiba Inu: 13”–16” Basset Hound: 14”–18” Pug: 12”–16” Miniature Schnauzer: 12”–17” Large Dog Breeds (Avg. Neck Sizes 16”–24”): Golden Retriever: 18”–24” Labrador Retriever: 18”–24” Boxer: 16”–22” German Shepherd: 18”–24” Dalmatian: 18”–22” Bulldog (English): 18”–24” Australian Shepherd: 16”–22” Standard Poodle: 16”–22” Bernese Mountain Dog: 20”–26”