Dealglad Soft Cozy Silicone Pet Dog Duckbill Duck Mouth Cover Anti Biting and Barking Adjustable Safety Mask Cage Muzzle Made by high quality soft cozy Silicone, Non-toxic, Non Odor, and it is very comfortable for the pet. Comes with the adjustable strap, comfortable for you to adjust according to the head of the pet. Prevent the dog bitting, prevent the dog eatting junk food outside, prevent the dog licking wounds, prevent the dog barking. High quality buckle and strap, more durable, anti-slip. Size S: mouth circumference: 4.73 Inch (12cm), Size M: mouth circumference: 5.9 Inch (15cm), Size L: mouth circumference: 6.3 Inch (16cm)