Pet chain size: S size: neck circumference 23.5-29CM/chest circumference 33-39.5CM
(S-code ropes have 3 adjustment holes respectively)
M size: neck circumference 34.5-44CM/ chest circumference 45.5-57CM
(The M-code rope has 4 adjustment holes respectively)
L size: neck circumference 42-51.5CM/ chest circumference 56-68CM
(L size rope has 4 adjustment holes respectively)