Collar size: S: neck 8.5-10.5 in (22-27 cm), width 0.5 in (1.3 cm). M: neck 10.5-12.5 in (27-32 cm), width 0.5 in (1.3 cm). Notice: When measuring length, please set aside a little more, avoiding the pet feels uncomfortable because the collar...

Collar size: S: neck 8.5-10.5 in (22-27 cm), width 0.5 in (1.3 cm). M: neck 10.5-12.5 in (27-32 cm), width 0.5 in (1.3 cm). Notice: When measuring length, please set aside a little more, avoiding the pet feels uncomfortable because the collar...