NFL Chicago Bears Leather Dog Collar Neck Sizing Chart:Toy fits 6 - 10 inchesSmall fits 10 - 14 inchesMedium fits 14 - 20 inchesLarge fits 18 - 26 inches Made from Genuine Leather Officially Licensed Neck Sizing Chart:Toy fits 8 - 12 inchesSmall fits 10 - 14 inchesMedium fits 14 - 20 inchesLarge fits 18 - 26 inches Wear your love; wear the game Genuine Leather