Collar Width

Neck Size 12 inch

Neck Size 14 inch

Neck Size 16 inch

Neck Size 18 inch

Neck Size 20 inch

Neck Size 22+ inch

5/8 inches Small Small Small Small NR NR
3/4 inches Small Sm/Med Sm/Med Medium Medium Medium
1 inches
NR
Medium Medium Med/Lg
Med/Lg
Large
1 1/4 inches NR NR NR Large Large Large

*NR=Collar is not recommended for that combination of collar width and neck size

Dimensions (in mm) Width Height Thickness
Small* 89 39 22.2
Medium 93 43 22.7
Large 104 52 22.7

*has extra curvature for better fit