1. What the dog muzzle can offer you is that they can not only limit the dog's not good habit of chewing and biting furniture, but also prevent pets from biting people, eating garbage and barking at random. 2. A mesh design is adopted in this dog muzzle, which has good air permeability and won't make pets feel stuffy when wearing it. It has an adjustable neck strap, the tightness can be adjusted at will, and it is comfortable to wear. 3. It is constructed of rubber material. 4. There are 6 different sizes for you to choose from. 5. Dog muzzle is very suitable for dogs, puppies and other small animals. 6. Item Name: Dog Muzzles 7. Material: Rubber 8. Features: Adjustable, Breathable, Tear-resistant, Comfortable 9. Size Details: XS, Head Circumference: 30cm-40cm/11.81"-15.75" (Approx.) S, Head Circumference: 34cm-48cm/13.39"-18.9" (Approx.) M, Head Circumference: 39cm-51cm/15.35"-20.08" (Approx.) L, Head Circumference: 45cm-59cm/17.72"-23.23" (Approx.) XL, Head Circumference: 47cm-61cm/18.5"-24.02" (Approx.) 2XL, Head Circumference: 51cm-72cm/20.08"-28.35" (Approx.) 10. Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. 11. Package Includes: 1 x Dog Muzzles