Size chart - Classic collar BioThane

To measure your dog's neck, use a textile measuring tape. Ensure it's neither too loose nor too tight, and wrap it around the neck without leaving any space underneath. Our collar is adjustable, allowing you to fine-tune the fit by many centimeters.

Size Collar width (mm / inches) Neck size (cm) Neck size (inches)
S 16 mm / 5/8" 21-29 cm 8.2-11.4"
S 19 mm / 3/4" 21-29 cm 8.2-11.4"
M 19 mm / 3/4" 29-40 cm 11.4-15.7"
L 25 mm / 1" 30-41 cm 11.8-15.7"
L 38 mm /  11/2" 34-45 cm 13.38-17.7"
XL 25 mm / 1" 38-51 cm 14.9-20.0"
XL 38 mm /  11/2" 42-55 cm 16.5-21.6"
XXL 25 mm / 1" 45-67 cm 17.7-26.3"
XXL 38 mm / 11/2" 49-71 cm 19.2-27.9"