Proguard softie muzzles the safest muzzle in the world. Ideal for grooming, training emergencies for your pet. Made out of a patented dupont fabric, it allows your dog to breathe as normal while preventing it from barking and biting. Can be used during exercise play. Easy adjustable snap buckle frontal mesh panel for best pet breathing and ventilation. The softie is exceptionally resistant to abrasions, punctures and tears. Safest muzzle in the world patented dupont fabric easily adjustable snap buckle frontal mesh panel size guide muzzle size circumference midway around muzzle width midway across muzzle length nose to throat neck strap adjustment dog breeds small 7 1 2 2 3 1 4 10 22 mini poodle, sheltie, bichon frise, miniature schnauzer medium 9 1 2 2 1 4 4 1 2 13 1 2 22 1 2 fox terrier, beagle, lhasa apso, keeshond large 11 2 3 8 5 1 4 15 26 1 2 cocker spaniel, boston terrier, bull terrier, border collie x large 12 1 2 3 5 1 2 12 31 husky, labrador, golden retriever, setters giant 16 4 7 1 2 21 33 great dane, newfoundland, great pyreness, st bernard