MLB New York Yankees Derek Jeter Classic Leather Baseball Collar, Small Neck Sizing Chart: Toy fits 6 - 10 inches Small fits 10 - 14 inches Medium fits 14 - 20 inches Large fits 18 - 26 inches Made from Genuine Leather Officially Licensed Your pet can wear the game like never before with these stylish, officially licensed baseball collars from GameWear Made from Genuine Baseball Leather Neck Sizing Chart: Toy fits 8 - 12 Inch Small fits 10 - 14 Inch Medium fits 14 - 20 Inch Large fits 18 - 26 Inch