Package: 1pcs blue and 1pcs yellow Applicable size: mouth circumference 5.7'', neck circumference 7''-11.8'',the Dog Muzzles For Medium Dogs Belt Adjustable:Duckbill-shaped design, in line with the pet dog’s mouth shape, effectively helps you train your pet, and can also be used as a cute decoration to make your pet look like a cute duckling and make it more quiet cute. Available Sizes and Adjustable Strap for medium dog . Choose. Quick-release buckle for fast fit. Material:The Cute Duck Dog Muzzle Made of silicone and nylon rope, it is robust, soft and comfortable.Protect dog's comfort and health.non-toxic, odorless and washable.It can effectively preven t unnecessary losses to others when walking the dog, and can well domesticate them, allowing you Dog looks more approachable. Wearing is very comfortable, do not make the dog feel uncomfortable. Prevent the dog bitting, prevent the dog eatting around, prevent the dog licking wounds, prevent the dog barking. These muzzles look ridiculous, help to muffle my dudes’ barking, and eliminate excited nipping entirely. I do not use them often, but when I’m expecting strangers ,they’re amazing at preventing the house from devolving into a whirlwind of frenzied barking. We only got it for her so she can pay attention to use the potty when outside instead of breaking at every car that passes by. She never wears it for more than 3 to 5 mins tops. It has stopped her from barking at everything. Highly recommended. I got the M for my chubby I already had one of these, but I wanted a spare. It is so much more hilarious to see on my dog than the yellow! Hilarity aside, this is a fantastic muzzle: my toy poodle can still breathe and is reasonably comfortable, but now she can't snap at me when I'm grooming her and hit a mat (or if she feels I'm taking too long on her legs). It's easy to snap on and off, too. I was a bit skeptical about how well this muzzle would work, I have a fear biter and our vet has asked that he be muzzled and I be in the room to hold him for blood draws, shots, nail trims ect. After a few test runs, he doesn’t seem to mind wearing it. I put peanut butter in the bottom and he can stay busy licking it out. He did much better at his check up at the vet’s office today