This is a DuraGuard Size 4 Dog & Puppy Muzzle TPR Rubber by Pet One. They are used with dogs that may be prone to biting or chewing. Many places require your dog to be muzzled for safety of others. The adjustable strap will help get your dog the best fit. The straps are reflective making them visible at night. The basket muzzle is designed to let your dog breath and maintain air flow to their face.

• Size 1: Length: 7.5cm - Circumference: 18-21cm - Breeds: Mini Dachshund, Toy Poodle, Maltese Terrier
• Size 2: Length: 9cm - Circumference: 21-26cm - Breeds: Border Terrier, Mini Poodle, Mini Schnauzer
• Size 3: Length: 10.5cm - Circumference: 26-30cm - Breeds: Beagle, Corgi, Cocker Spaniel, Poodle
• Size 4: Length: 11.5cm - Circumference: 30-34cm - Breeds: Dalmatian, Husky, Staffie, Cattle Dog
• Size 5: Length: 12cm - Circumference: 34-37cm - Breeds: Boxer, German Shepherd, Golden Retriever
• Size 6: Length: 14.5cm - Circumference: 38-43cm - Breeds: Bull Mastif, Great Dane, St Bernard, Rottweiler