Valhoma Nylon Muzzle Size 6

6 (Fits Up To 10" Muzzle Circumference. Size 6 Is For Big Dogs 80 lbs. and Over With A Long, Wide Muzzle. [I.E.: Bloodhound, Irish Wolfhound, Pet With Long/Wide Snout] Measure Around Widest Part Of Dog's Muzzle To Ensure Proper Size Selection.)