Measure your dog’s neck circumference and add about 0.5 to 1 inch to the result.
If you’re between two sizes, always go for the larger one.
| Neck | Collar width | |
| XS | 8.5 - 10 in |
1.6 in |
| S | 9.6 - 11.2 in |
1.6 in |
| M | 11.2 - 12.8 in |
1.6 in |
| L | 12.4 - 14.2 in |
2 in |
| XL | 14.4 - 15.9 in |
2 in |