Dog Muzzle Adjustable Anti Bark Polyester Anti-Bite Pet Mouth Cover for Puppy. Description: The adjustable buckle design can be adjusted to the most appropriate size depending on the shape of dog’ s mouth. This dog muzzle is an effective way to limit dogs biting, barking, unwanted chewing and other bad habits. It is made of high quality polyester material. There are 7 sizes to choose from. It will be an ideal pet accessories. Item Name: Dog Muzzle Material: Polyester Size Details: [Our Size 1] Min Diameter: 12cm/4.72", Max Diameter: 16cm/6.3", Length: 4cm/1.57" (Approx.) [Our Size 2] Min Diameter: 14cm/5.51", Max Diameter: 18cm/7.09", Length: 4cm/1.57" (Approx.) [Our Size 3] Min Diameter: 16cm/6.3", Max Diameter: 20cm/7.87", Length: 4cm/1.57" (Approx.) [Our Size 4] Min Diameter: 17cm/6.69", Max Diameter: 22cm/8.66", Length: 5cm/1.97" (Approx.) [Our Size 5] Min Diameter: 19cm/7.48", Max Diameter: 27cm/10.63", Length: 6cm/2.36" (Approx.) [Our Size 6] Min Diameter: 21cm/8.27", Max Diameter: 31cm/12.2", Length: 7cm/2.76" (Approx.) [Our Size 7] Min Diameter: 23cm/9.06", Max Diameter: 32cm/12.6", Length: 7cm/2.76" (Approx.) 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. Package Includes: 1 x Dog Muzzle