The Dog Mask can protect the dogs mouth and nose perfectly, by giving your pet better and more complete protection from dust, smog, pollen, PM2.5, car exhaust, pathogenic microorganisms, allergies and other harm, providing security for your pet. The Dog Mask is made of ultra-soft non-woven fabric which cooperates with a breathing valve to keep air flowing, and has a pressure-proof sponge pad inside the mask to protect the dog's upper jaw and makes the Dog Mask even more comfortable to wear. The Dog Mask has a double-way adjustable strap so that you can change the length according to the size of your dog's mouth. It has a built-in optional qualitative steel ring that can be pinched to fit the shape of your dogs muzzle without affecting the dog's sight. The Dog Mask can effectively protect pets from smog, dust, pollen, PM2.5, car exhaust, pathogenic microorganisms, secondhand smoke and so on. Provide going out security for your pet.