First, find a measuring tape.

Next, measure the circumference of your pet’s neck.

Use the chart below to determine your pet’s size.

CIRCUMFERENCE (IN / CM)

XS 4 - 7.5 IN | 10 - 19 CM

S 7.5 - 11.5 IN | 19 - 29 CM

M 11.5 - 15 IN | 29 - 39 CM

L 15 - 19.5 IN | 39 - 50 CM

XL 19.5 - 23.5 IN | 50 - 60 CM

2X 23.5 - 27.5 IN | 60 - 70 CM

3X 27.5 - 31 IN | 70 - 80 CM