Dogs Kingdom Genuine Leather Muzzle Pitbull Terrier Cage Basket Secure Dog Muzzle S:circumference10"-14.5"(25-36cm). M:circumference10.8"-15.2"(27-38cm). L:circumference 15.2"-17.2"(37-43cm). XL:circumference15.6"-18"(39-45cm). XXL:circumference 16"-18.4"(40-46cm). 3XL:circumference 16"-20.4"(40-51cm). New Fashion Design with High quality.beautiful,comfortabke and durable. Helps stop biting, barking, and chewing. It's really very important for size measurement. To save your time and money, please choose a correct size option before you order. Shipping:10-20 days to delivery with Standard shipping. 3-7 days with Expedited shipping. We have many styles pet supplies (collar,harness,Leash,constume...) Available, please visit Dogs Kingdom shop for more choose.