A Very Strong Muzzle With A Pre-Moulded Shape For Fast And Easyfixing.Muzzle Size Dogs Noseband (Inch)1&2 Yorkies 7.54 Whippets 9.56 Border Collies 118 Labradors 1210 Labradors 1312 Labradors 14.514 Great Danes 15These Straps Are Adjustable So It Leaves A Little Room For Flexibility.