Size

Length*Round Mouth*Height

Adjustable Range

Pet Weight

S

10.9*14.6*6.5cm

11*23cm

2.5-5kg

M

12*17*7.3cm

14-26cm

5-7.5kg

L

13.3*20*8.1cm

17-33cm

7.5-12.5kg

XL

14.5*23*8.9cm

20-43cm

12.5-20kg

The size chart is for reference only, it is recommended to measure the mouth circumference, it is normal that there is a 2-3cm error in manual measurement.