Classic Leather Collar Sizing Chart
| Size | Neck Size | Collar Width |
| 10 | 6 to 8 inches | 1/2 inch |
| 12 | 8 to 10 inches | 1/2 inch |
| 14 | 10 to 12 inches | 1/2 inch |
| 16 | 10 to 13 inches | 3/4 inch |
| 18 | 11 to 14 inches | 3/4 inch |
| 20 | 13 to 17 inches | 3/4 inch |
| 22 | 15 to 19 inches | 1 inch |
| 24 | 17 to 20 inches | 1 inch |
| 26 | 19 to 23 inches | 1 inch |
