Sure Fit Muzzle by Proguard Pets Brand: ProGuard Size: 2- X Small Muzzle circumference: 6.5" Muzzle measures: 2.5" from edge at nose to eyes. Designed to fit these breeds: Chihuahua, Malti-Poo, Toy Fox Terrier, Bichon, Silky Terrier and Pom-a-Poo