*Measurements are from
the base of the neck to the rear.

XXS - 6-8 INCHES (2-4lbs)
XS - 8-10 INCHES (4-8lbs)
S - 10-12 INCHES (9-13lbs)
M - 12-14 INCHES (14-17lbs)
L - 14-16 INCHES (18-22lbs)

Collars are measured in inches.

If your dog or cat fall between
sizes you would be better off
going to the larger size.