Reflective Dog Collar Double Nylon 1" Wide Fits 17"-21.5" Neck Labrador, Amstaff, Boxer 1" wide high quality strong and durable thick double-ply nylon collar with with reflective edges. Effective way to enhance visibility at night. Comfortable for wearing and lighter weight, can be adjusted to fit 17"-21.5" neck Most suitable for Medium and Large breeds. 5 metal enforced eyelets for adjustment Ideal collar for everyday use. Please measure dog's neck before you order.