Kwip Klip fastening for easy adjustment to fit your dog perfectly. High quality nylon webbing provides ventilation for your pet. Open front allows for easier panting and breathing.

Size 1 For Pomeranians, Toy Poodles, Chihuahuas, Yorkies Up to 7 pounds, 3" Nose Circumference.
Size 2 For Miniature Dachshunds, Miniature Poodles, Whippets 7-12 pounds, 4" Nose Circumference.
Size 3 For Jack Russells, Schnauzers, Dachshunds 12-24 pounds, 5" Nose Circumference.
Size 4 For Beagles, Cocker, Springer & Brittany Spaniels 24-48 pounds, 6" Nose Circumference.
Size 5 For Basset Hounds, Siberian Huskies, Dobermans, Setters 48-60 pounds, 7" Nose Circumference.
Size 6 For Dalmatians, Weimaraners, German Shorthairs, Boxers 60-80 pounds, 8" Nose Circumference.
Size 7 For Retrievers, Akitas, German Shepherds 80-100 pounds, 9-1/2" Nose Circumference.
Size 7XL For Great Danes, Wolfhounds 100-120 pounds, 10-1/2" Nose Circumference.
Size 8 For Rottweilers, Mastiffs, St. Bernards, Newfoundlands 120-155 pounds, 11-1/2" Nose Circumference.
Size 8XL For XL Rottweilers, XL Mastiffs, XL St. Bernards, XL Newfoundlands 155-220 pounds, 13-1/2" Nose Circumference.
CAUTION:
Designed for midly aggressive dogs only. Practical usage recommended. Use only with direct supervision. Never leave your dog unattended. Using a muzzle for an extended period of time can interfere with your dog's natural cooling system.