Adjustable Size: M size is 16.5-20 inches. Comfortable and adjustable length won't strangle your dog's neck Comfortable & Durable: The dog collars for medium/large/small dogs are made of high quality cotton with reinforced durable woven design, to ensure long term performance. Strong enough for small, medium and even large dogs Ombre Color: The fashion and bright ombre color makes your lovely pets stand out when you walking and playing with them, not only a strong dog leash but also a adorable decorationHigh Quality: Heavy duty buckle and durable D-ring, strong and pull resistant Satisfaction Guarantee: If you have concern or problem, please dont hesitate to contact us any time. We provide 24-hour service to give you the 100% satisfaction guarantee