Sizing
| GOGGLE SIZE | HEAD CIRCUMFERENCE | MUZZLE CIRCUMFERENCE | |
| X-Small | Less than 10.5 Inch | Less than 6 Inch | |
| Small | 10.5 Inch to 12 Inch | 6 Inch to 8 Inch | |
| Small Wide* | 12 Inch to 15 Inch | 6 Inch to 9 Inch | |
| Medium | 12 Inch to 14 Inch | 8 Inch to 9 Inch | |
| Large | 14 Inch to 17.5 Inch | 9 Inch to 11.5 Inch | |
| X- Large | More than 17.5 Inch | More than 11.5 Inch |
*Designed for dogs with a wide, flat face i.e Boston Terriers
If your dog is between sizes, select the larger size: This will insure the most functional fit and optimal field of view