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" |
